1/ Ann didn't pass the antrance examination, so she wasn't admitted to the university.
--> If...........
--> Unless ..........
2/ I am not at home now, so I can't answer your phone.
--> If.....
--> Unless......
3/ Have you told her about the present ( Passive )
-->.....
4/ Tom is answering this question at the momments ( Passive )
-->.......
5/ I fell asleep because the film was so boring.
--> If....
--> Unless......
6/ Because he cut these young trees. He was punished.
--> If.......
--> Unless.....
7/ If she doesn't work harder, she will lose the job.
--> If....
--> Unless......
8/ My boyfriend didn't give me the address, so I couldn't meet him.
--> If......
--> Unless......
9/ We couldn't visit the museum because we didn't have enough time.
--> If.....
--> Unless....
10/ She does a lot of household chores so she fells very tired.
--> If.....
--> Unless......
11/ It is rainning now, so I will not go for a walk.
--> If......
--> Unless....
12/ The building is too high. He can't climp up
--> If......
--> Unless......
13/ I couldn't make a film because I wasn't a good director
--> If
--> Unless...
14/ He didn't work hard last term, he lost his job.
--> If.....
---> Unless

II. Make questions:
1. It often takes him (15 minutes) to go to his office.
->
2. My aunt and uncle live ( in Chicago.)(Make question)
->
3. We often have dinner (at 7:00 pm.) (Make question)
->
4. It takes me (30 minutes) to go to school. (Make question)
->
.5. She speaks English ( very fluently ). (Make question)
->
6. I have written (over twenty) novels.
->
7. I spent (10 dollars) on this shirt.
->
8. I have been learning English ( for 5 years. )
->

I/ Give the correct tense of the verbs in brackets :
1. Mother (cook).......some food in the kitchen at present. She always (cook) ..........in the moning
2. We (live)............in this city for 20 years. We love this city very much
3. Thomas (finish)............his home work. He's going to school
4. I (already /see).............that film. I don't want to see it again
5. I (read)............"Gone with the Wind" twice. I still want to read it again
6. I (not be)...............to Da Lat. I have heard that it is a beautiful city
7. She (just/leave)...........the party when you arrived
8. Up to the now, George (write)...........five children books
9 You (do).........anything interesting lately ?
10. What they (learn)...............so far?
11. We (wait)..........for the bus for an hour
12. You (do)..........your homework yet?
13. They had sold all the books when we (get).........there
14. She (play)..............the piano when our guests (arrive)..
15. Listen! I think someone (knock)..........at the door.
16. She made me (feel)..........uncomfortable when I got home.
17. He suggests (see)............the director immediately.
18. Do you wish (be)............offered a present?
19. I don't enjoy (watch).............television all the time.
20. She is looking forward to (see).............the manager again.
21. I promise (meet).............you here.
22. They avoid (hold)...........the party because she was out.
23. Last night before he (watch)............TV, he (do)...........the exercise.
24.I don't mind (work)............late, if it will help at all.
25. We managed (climb)...........over the wall without (see)..........
26. Tim (not/ take).............many photos yet.
27. She (study).............English at the moment

IX/Supply the correct tense of the erb:
1. The Prime Minister (be)........... to Moscrow several times.
2. Be careful! The teacher (look)........ at you.
3. Harry (work).........for the company since last summer
4. What (you /do).............when I phoned you last night?
5. Susan (just sleep)..............when I (come)......... ?
6. Your friends (not/ catch.)............. the bus some days ago ?
7. Would you mind (open)............the window?
8. We suggest (see)........the house where William Shakespeare was born.
9. They promised (give)................me a present 2 days ago.
10. The house was very quiet when I..........(get) home. Everybody.............(go) out for dinner.
11. Lam's family avoid (spend)............their next summer vacation in Hoi An.
12. She (cook)..............dinner at the moment.
the telephone 2 days ago
13.He (borrow) ........... the telephone 2 days ago.
14. Nam.......... (not buy) a new computer since he..........(sell) the old one last month.
15. Before they bought that house, they (check)........he price carefully
16. When my brother arrived, I (eat)..........chocolates
17. They (do).............Math exercises at the moment.
18. My teacher asked me (go)............to HCM City two days ago.

[1]: Viết cấu hình của các ion sau : Cu²⁺, P^3-, Fe³⁺, Cl^-, Mg²⁺ .Biết rằng thứ tự nguyên tử lần lượt là Cu (Z=29), P (Z=15), Fe ( Z=26), Cl (Z=17), Mg ( Z=12).

[2]: Viết cấu hình electron các nguyên tử sau :

a. Nguyên tử A có điện tích hạt nhân +32.10^-19C

b. Điện tích vỏ nguyên tử B là -48.10^-19C

c. Nguyên tử C có 6 electron ở lớp M

d. Nguyên tử D có tổng electron phân lớp s là 5

e. Ion X³⁺ có tổng số electron là 23.