Answer The Questions Using Just, Already, Yet
1. Have you written the composition for the English lesson? (yet)
2. Have you studied for the Geography exam yet? (already)
3. Have you finished painting the fence behind the school? (just)
4. Have you eaten anything for breakfast? (yet)
5. Have you taken the trousers to the tailor's yet? (already)
6. Has your father bought the newspaper and bresd yet? (just)

Exercise 30 (Present perfect tense)
1. I (has/have)_____(see) the Statue of Liberty before
2. They (has/have)_____(write) ten letters to the governor
3. James (has/have)_____(be) to Canada twice
4. The students (has/have)_____(do) their homework
5. (Has/have) you__________(catch) a baseball before?
6. He (has/have)_____(eat) three pieces of chocolate cake today
7. My heart (has/have) been ________(break) before
8. (Has/have) you__________(forget) the password?
9. (Has/have) you__________(choose) a name for your new baby?
10. All the money (has/have) been__________(steal) from the bank.
Exercise 31 (Present perfect tense)
1 Mark (eat)_____________dinner already. He is not hungry
2. Beth (write)_________three letters today. She misses her family
3. Yoko and Armand (take)_______the rest. Now they can relax
4. Marty and I (be)________to Costa Rica three times. We are familiar with the culture
5. I (drink)___________six cups of water today
6. Eva (sing)____________in a chorus before. Her voice is pretty
7. Chong-Li (get)___________very good at speaking English. She has practiced a lot
8. Lucy (hide)__________in the woods. Now her friends will try to find her
9. It (be)___________a good week so far
10. You (show)__________that you are a hard worked. Good job!
11. Daisy (wear)_____________a dress to work every day this week
12. Mr. Lee (drive)____________from Texas to Iowa gor the conference
13. Juan (ride)_________________horses since he was a little boy. It is easy for him
14. Mr. and Mrs Sanchez (become)______________grandparents
15. The movie (begin)____________.Please be quiet!
16. Charity (break)_____________her leg on the ski slope. Please sial 911
17. The city (allow)__________residents to shoot off fireworks each year on the Fourth of July
18. The lake (freeze)______________solid. Now we can go skating
19. The sun (rise)______________. It's time to get up
20. The army (battle)__________the enemy for two weeks. The soldiers are exhausted
21. The principal (introduce)_______________the new teacher. She seems very nice
22. Using his telescope, Jeremy (see)__________other galaxies
23. The judge (listen)__________to all of the evidence. Now he will make a ruling
24. The strawberries (spoil)_____________.They should have been kept in the fridge
25. The doctor (write)___________a book about disease prevention

Exercise 28 (Present perfect tense)
Fill in the spaces with the correct from of the verd in simple present perfect tense
1. Our company (arrive)_________________. Please answer the door
2. The ice on the sidewalk (melt)_________________.I think the sun is our today
3. The Johnsons (prepare)___________________a lot of food for the party. It looks delicious
4. Tony's flight from New Jersey (land)_____________________.We should see him any minute
5. The bank officers (suggest)_________________that the meeting for Wednesday.
6. Sparky (taste)________________his new dog food and he seems to like it
7. The police (arrest)_____________two men for the robbery
8. The medicine (cure)___________________Willian's illness. It seems miraculous
Exercise 29 (Present perfect tense)
Ex: Amy (eat) has eaten lunch already
Amy and Arnold (eat) have eaten lunch already
1. I (visit)_______________Tennessee before
2. You (visit)__________________Utah before
3. We (visit) __________________North Carolina before
4. They (visit)________________California before
5. He (visit) ____________________Texas before
6. She (visit) ____________________New York before
7. It (visit)____________________Colorado before
8. They (take)_______________the rest. Now they must wait for their scores
9. I (eat)_____________dinner already. I am not hungry
10. All of the children (brush)____________their teeth. He is ready to take a break
11. Andrew (finish)______________his work. He is ready to take a break
12. Mimi (play)__________________golf before
13. I (see)____________this movie before. I don't want to watch it again
14. I (wash)_____________my clothes. Now I can put them on
15. You (complete)_______________this exercise. Hooray!

Fine and correct errors:
1. What would you like buying at the moment?
2. Mr. Minh rides his bike to work at the moment
3. I don't have some oranges, but I have some bananas
4. How many homework does Lien have today?
5. I want a tube of choolates and a bottle of water
6. There are some orange juice and some milk to drink
7. I'm the younger person in my family
8. My brother is the busy than I am
9. Hanoi have population of 2,6 million
10. London is smallest then Mexico City
11. She is my friend. She's from French
12. Which season is coldest in your country?
13. We are going shopping at Friday
14. Are you going to your English class this tonight?
15. Let's to go to the beach and have a good time here

I. Give the correct form of these verbs:
1. When you (go)______into the office, Mr. John (sit)___at the ftont desk
2. We (wait)____for you when you (get)______back tomorrow
3. The farmers in my village often (begin)____their work very early
4. Recently, the internet (become)_____more popular all around the wold
5. We (leave)____for Hanoi on the earliest plane tomorrow
6. As we are kids, we (not understand)___the importance of choosing a career
7. Hoa (keep)_______her teeth very careful. She (brush)____her teeth twice a day
8. I'd like (go)_____fishing. I (go)_____fishing when I (have)______free time
9. Long is a hard-working student, now he (read)___books in the library

I. Give the correct form of these verbs:
1. You (be)_____free next Saturday morning?-No, I (visit) ______my grandmother
2. Trang (not be) ___in her room at the moment. She (cook)____in the kitchen
3. She (work) _________ in this factory with her mom for many yaers
4. Lien (not go)______ to the movie theater tomorrow. She (stay)____at home
5. We (not meet)_____each other since she moved to the city
6. Where is your mom, David? - She (cook)_____in the kitchen
7. Jan (not have) _______many new friends in hẻ new school
8. Hung (come)_______from Vinh, but he (stay)____with his ralatives now
9. We (not drive)_________to work every day. We (go)____________by bus
10. Who (talk)________ on the phone yesterday, Nam?
11. They (often build)_______hotels, but this year they (build)____hospitals
12. Would you like (have)_______dinner with my family tonight?
13. My mother í saving money because they (buy)_______a new house next year
14. I (Watch)____TV while my parents (working)____in the garden
15. Mr. Thanh (be)_______a doctor. He (work)_____in a hospital
16. We (Not go)________camping next week. We (visit)_____the museum
17. Have you ever (take)_____a trip to Australia?
18. Hurry up! We (wait)_____for you. If you (be)_____slow, we (miss)____the bus
19. My mother í saving money because they (buy)____ a new house next year
20. She í preparing her trip now. She (visit)______her friends tonight
21. They (finish)_______their homework for tomorrow yet?
22. He usually (watch)_____TV. He (not talk)_______to her at present
23. He_____(be) out at the moment but he______(be) back at about seven o'clock
24. I can_____(see) the children. They______(play) in the yard.
25. Don't worry. I (give)____him your message when I (see)______him

độ to của âm phụ thuộc vào các yếu tố nào của vật dao động?càng đến gần nguồn âm các biên độ dao động âm thay đổi như thế nào?

\(\left|\dfrac{-1}{2^2}\right|:\left(\dfrac{3}{4}-\dfrac{4}{5}\right)^2-\left|-12\right|\)

Đặt câu hỏi (in đậm)
Mr.Quang isn't eating breakfast at the food store