Viết lại câu giữ nguyên nghĩa :
1. It isn't essential for students to wear uniforms today. => Students .....................
2. My best friend will leave for Bangkok tomorrow. => I wish .....................
3. He could not afford to buy the car. => The car is .....................
4. Quyen will be sixteen next week. => It is Quyen's .....................
5.When did you start to listen to classical music ?. => How long ..................... ?
6. He hasn't been back to his hometown for over 10 years. => It's .....................
7. What a pity! There is a lot of pollution in the air here. => We wish .....................

Cho 5g hỗn hợp 2 muối là và NaCl tác dụng với 200ml dung dịch HCl ta thu được 448 ml khí (ở đktc)
a, Tính nồng độ mol của dung dịch axit HCl
b, Tính thể tích dung dịch HCl đã dùng ( Giả sử khối lượng riêng của dung dịch HCl là 1,25g/mol )

I/ writing/ tell you/ trip/ Ha Noi/ last summer vacation./ I/ go/ Ha Noi/ classmates/ only one day. It/ about/ 80km/ hometown,/ so/ we/ go/ car./ We/ set off/ 5.00am/ arrive/ Ha Noi City/ 7.00am.
It/ beautiful day/ cool weather./ With in one day,/ we/ visit/ some famous places/ as/ HCM Mausoleum, The Temple of Literature and Thu Le Zoo./ These attractions/ quite/ close/ so/ it/ very convenient/ us/ look at them./ We/ could/ sightseeing,/ take/ lot/ photos/ me/ my friends,/ I buy/ some souvernirs/ family there./ Besides,/ we/ enjoy/ "Bun Cha" which/ be/ special food./ It/ really delicious./ However,/ thing/ I/ impressed/ most/ be/ that/ I could see/ Uncle Ho/ first time/ when/ visit/ Ho Chi Minh Mausoleum/ and/ friendliness/ Hanoi peple.
We/ leave/ Ha Noi/ about 5pm/ home./ We/ a bit/ tired/ but/ we/ have/ lot/ fun. It/ exciting trip/ and/ I/ learn/ many things/ trip. I hope/ we/ return/ Ha Noi/ again/ someday.

Viết lại câu giữ nguyên nghĩa :

1. My father started to give up smoking last year. => My father has

2. The last time they spoke to her was when they were at her party. => They haven't

3. It is nearly twenty years since I last saw my uncle. => I haven't ............../ I last ...............

4. This is the first time I have eaten such a delicious cake. => I have not

5. I am sorry that I am busy today so I can't go with you. => I wish

6. What a pity! Dung must work on Saturday. => I wish

7. There is much air pollution in her area. => She wishes

8. He can not swim because it is in the winter. => He wishes

9. We speak English badly. => We wish

Viết lại câu giữ nguyên nghĩa :
1. Jane can swim further than I can. => I cannot
2. We did not do the test as quickly as Linh. => Linh did
3. Peter cannot run as fast as Tim. => Tim runs
4. John speaks French more fluently than I do. => I cannot
5. He plays football better than me. => I don't
6. Thanh works harder now than last year. => Last year Thanh
7. He doesn't understand the lessons as well as last year. => Last year he
8. My sister usually gets up earlier than me. => I usually
9. Yesterday, Mr Pike didn't drink as much as Mr White. => Yesterday Mr White
10. Mrs Na is a slower and more careful driver than I am. => Mrs Na drives

Fill in the blank with the correct comparative form of the adverb :
1. He arrived (early) than expected.
2. We walked (slowly) tha the rest of the people.
3. They called us (late) in the afternoon.
4. My mother and my sister talked (loudly) than the other guests.
5. He hit his arm (hard) than before.
6. The Spanish athlete ran (fast) than other runners.
7. Jim threw the ball (far) than Peter.
8. We answered all the questions (well) than the other students.
9. Our new teacher explains the exercise (badly) than our old teacher.
10. The new mechanic checked the car (thoroughly) than the old mechanic.

Read the following passage and choose the best answers :
Dear Jean,
I am sorry I (1) to you lately, but I have been working hard. When I (2) your last letter. I was acting in a play at school, and when I finished that I went on a holiday with some friends. I intended (3) you a postcard, but I forgot to take your address with me. How are you getting (4) at college? You didn't (5) much about this in you letter. I hope you still like it and don't work all the time! I am starting work in Lodon after I (6) school in July, and I want to see you then. Do you still want to come and stay (7) a few days? I know you are busy, but by the time your term (8), I'll have started my job. I've done so (9) things lately! I've just learned to drive and my parents sometimes lend me their car, so I often go out with friends. (10) I'll drive to Birmingham and see you one day.

Complete each of the following sentences using the correct form of a phrasal verbs in the box :

1. My sister is an early bird. She ................. at 7 o'clock every day of the week.
2. We'll ....................... for Tay Ho village at 9 o'clock and arrive at 10 o'clock.
3. When I was a student, I ...................... small allowances from my parents.
4. The government must now ................... The preservation of traditional craft village.
5. The banks have ..................... a lot of branches in villages over the last few years.
6. Many foreign tourist decied to ..................... to Viet Nam for another holiday.
7. The offered her a trip to Europe but she .................... it ....................
8. He has .................... the report and found nothing interesting.
9. Phong walk too fast and it's really hard to ........................ him.
10. These traditional stories have been ....................... from parents to children over many gernernation.