C. will have finished D. finish
3. When my parents....for a visit tomorrow, they will see our new baby for the first time.
A. will arrive B. arrived C. will have arrived D. arrive
4. Fatemah looked down to discover a snake at her feet. When she saw it, she.............
A. was screaming B. had screamed C. screamed D. screams
5. By the time Alfonso finally graduated from high school, he.............seven different schools because his parents moved frequently.
A. attended B. was attending C. had attended D. had been attended
6. Until you learn to relax more, you..........your ability to speak English.
A. haven't improved B. aren't improving C. don't improve D. won't improve

1. After Jessica............. her degree, she intends to work in her father's factory.
A. will finish B. will have finished C. finishes D. is finishing

 2. By the time I go to bed tonight, I ......my work for the day.
A. will finish B. have finished C. will have finished D. finish
7. I borrowed four books on gardening the last time..................to the library.
A. go B. went C. had gone D. have gone
8. Before I stared the car, all of the passengers....................their seat belts.
A. will buckle B. had buckled C. buckle D. have buckled
9. It seems that whether I travelled abroad I ..........to take something I need.
A. forgot B. am forgetting C. forget D. had forgotten
10. When I see the doctor this afternoon, I ......him to look at my throat.
A. will ask B. asked C. will have asked D. ask
11. After ancient Greek athletes won a race in the Olympics, they....a simple crown of olive leaves.
A. received B. had received C. were receiving D. have received
12. After the race......., the celebration began.
A. had been won B. is won C. will be won D. has been won
13. I'll return Bob's pen to him the next time I .......him.
A. see B. will see C. will have seen D. have seen
From Thanh Thủy Hoàng to Everyone:  02:15 PM
14. I ........all of the questions correctly since I began this grammar exercise on verb tenses. A. am answering B. answer C. have answered D. answered
15. A small stone struck the windshield while we ..........down the gravel road.
A. drive B. were driving C. had driven D. had been driving

34,Ở 20०C hoà tan 40g KNO₃ vào trong 95g nước thì được dung dịch bão hoà. Độ tan của KNO₃ ở nhiệt độ 20०C là

A.42,1 g.

B.40,1 g.

C.44,2 g.

D.43,5 g.

31,Lấy 7,8 gam kali tác dụng hoàn toàn với nước thu được V lít khí (đktc). Giá trị của V là bao nhiêu? Biết H = 1 ; O = 26 ; K = 39.

A.2,24 lít.

B.0,56 lít.

C.1,12 lít.

D.4,48 lít.

30,Kim loại nào sau đây tác dụng được với H₂O ở nhiệt độ thường?

A.Al.

B.Cu.

C.Fe.

D.K.