TENSES

1. Fish .................... on earth for ages and ages. (exist)

2. Hurry up or the train ......... before you can catch it. ( leave)

3. Last week, my professor promised that he..... today (come)

4. My girls friend arrived after i .......... for her about half an hour. (wait)

5. Did she say she .......... him tomorrow? (visit)

6. ............. to rain before you woke up this morning. (begin)

7. My daughter saw an elephant this morning but she.......... one before. ( never see)

8. I......... in danang before I moved to Dong Nai. (live)

9. There are many ways to Rome. (lead)

10. He...... in space for 10 days by tomorrow. (travel)

TENSES

1. I think the weather ................... nice later (be)

2. She ............... very angry when she know this (be)

3. we were extremely tired at the end of the journey. We ....... for more than 24 hours ( travel)

4. It was 10 p.m. Most of the shops......... just ...... (have/closes)

5. Danniel ..... the bus. It doesn't run on sundays ( catch)

6. I think you ...... pay to park here, i will just go and read that notice.

A. will B. would C. must D. better

7. I think you should have the coast ...... soon (clean)

8. I'm going on holiday on saturday. This time next week i ......... on a beach in the see ( lie)

9. Ted and Amy........... for 24 years ( marry)

10. We didn't play very well. We ................ better (play)

11. I don't understand this sentences. What....? (mean this word)

12. There was a time when watching TV really ........... family entertaiment ( be)

13. Through the rain, I ................. a lighted window and a sign wich said " sam's place"

(see)

14. I'm feeling sick. I............ so much socolate last night (eat)

15. When we got home, dinner........... so we had a drink first (prepared)

Complete the sentences by putting the verbs in bracket in the simple past and past perfect

1. Tom (want) .......... to be a scientist when he (be)..... a teenager. After his graduation from hight school, he (go) .......... to college and (stay).......there for five years. Then several years later, after he (obtain)........ his doctorate he (work)......as a researcher in one of the world's biggest laboratories in the USA.

2.Lena (be) ........ a successful model before she (become) . ....... a movie star. she (earn) .......... A lot of money and also (spend)........ a lot. In 2000, Lena (go)..... to Frica for the filming of a series of science fiction. Before the film shooting (start)..........., a sudden landslide (take place)...... and (kill)....... two staff members, aworker and an actor. Lena (be)........ also badly injured in the disaster and she (have)...... to spend three months in a hospital.

3.An, aged 25 (be)....... the personnel manager of a large department store in London before she (move) ......... to new york two years ago. she (earn)............ 2000dollar a years for her job in London. However her new job in New York (bring)........ a real fortune 10000dollar a year. Lena (marry)...... a New Yorker last week and they (go)....... to EUrope for honeymoon.

4.Luck (have) ......... his beginning in the slums of Hong Kong before he (become)......... one of the richest men in Asia. His father (die)....... when he (be)........ six. his mother (have).......... a job in garment factory. Luck (have)........ A younger brother and a disabled elder sister. The children often (go)......... hungry and finally (stop).... going to school when their mother's salary (can,not)........ afford all the bills and food. Luck (have) ...... to pick up bits of smashrd cans and glass to sell to the local recycling company. he and his brother (work).............. very hard before they could save enough money to set up a junk shop of their own. they (buy)........... old things discarded by people in their neighborhood and (sell)....... them at low price to poor people . Gradually, their business......... (develop) into a big recycling company. They also(own).......... a high quality glass factory. they (invest)............... they money in foreign trade and (travel).......... to many countries to establish their joint-ventured enterprises. their mother and disabled sister (die)............. before Luck and his brother (become)....... rich. luck often (say) ......... that he never (forget)......... his poorer and unhappy childhood. he often (give)...... money to charity and (award)............. a lot of scholarships. he (build)........ many school for poor children in the country before he (die)....... in 1997.

Hiện tại mình đang cần gấp ai rảnh giúp mình nha!!! please.

Tìm giá trị nhỏ nhất.

A/x^2= x^2-6x+8-6×1/x+1/x^2

Cho phương trình:

(m+1)X^2 + 4mx + 4m -1=0

Tìm m để thoã mãn đk X1=2×X2