1. when I got home I found that water...........down the kitchen walls

A. run B. was running C has run D had been running

2 after he .............his Enlish course , he went to England to continue his study

A has finish B had finished C was finished D would finish

3. how ..............since we ...........college

a. are you/left b. were you/left c. have you been/ have left d. have you been/ left

4. I................much of you lately. We ..............three months ago

A. haven't seen / last met B. didn't see/ met C. haven"t seen/ have meet D. didn"t see/have met

5. when I arrived at the meeting the first speaker............speaking and the audience........

A. just finished/were clapping B. had just finished/had clapped C. had just finished/ were clapping D. just finished/ had clapped

6. he...........his job last month and then he.......out of work

A. lost/was B. was lost/had been C. has lost/was D. lost/ has been

7. In the 19th century, it ......tow or three months to across North America by covered wagon

A. took B. had taken C. had been taken D was taking

8.she ........to Ha Noi last year

A. went B. go C. goes D. is going

9. Right now, Jim ..............the newspaper and Kathy .......dinner

A. reads/has cooked B. is reading/is cooking C. has read/ was cooking D. read/ will be coking

1, they ( go) home after they (finish ) their work

2, before she (wath) TV, she ( do ) their home work

3, Nga ( go) out when I ( come )

4, I ( drink) a little coffee before I ( start) the job

EX1:

1, they ( go) home after they (finish ) their work

2, before she (wath) TV, she ( do ) their home work

3, Nga ( go) out when I ( come )

4, I ( drink) a little coffee before I ( start) the job

Hỗn hợp A gồm Fe3O4, Fe, Al và Al2O3. Cho A tan trong dung dịch NaOH dư được hỗn hợp chất rắn A1, dung dịch B1 và khí C1. Cho khí C1 (dư) tác dụng với A nung nóng được hỗn hợp chất rắn A2. Chất rắn A­2 tác dụng với H2SO4 đặc nguội, được dung dịch B2. Cho B2 tác dụng với dung dịch BaCl2 được kết tủa B3. Xác định các chất và viết phương trình hoá học xảy ra.

tam giác ABC vuông tại H . Biêta AB/AC = 5/2 . Vẽ đường cao AH, BC = 26cm

tính AB, AC, BH, CH

cho tam giác vuông MNP tại M, đường cao MH. Biết MH= 6cm, NH= 4,5cm.

Tính MN, MP, NP

Khí A có tỉ khối đối vs khí oxi bằng 1,0625. Đốt 3,4 g khí A thu đc 6,4 g SO2 và 1,8 g H20

a, Tìm CTHH

Số thích hợp để viết vào chỗ chấm 9 m 2 5 d m 2 =….  d m 2  là:

Complete each of the following sentences using the cues given. You can use other words in addition to the cues to complete the sentences.

They/ think/ visit/ Mai Chau/ this/ time/ year/ be/ best.