1.What would you do if you _______ (be) in a lift and it _______ (stop) between floors?

2. What time will you be home tonight? I'm not sure. If I _______ (have to) work late. I _______ (call) you.

3.I felt very tired at work today. -  Well, if you _______ (not/watch) the late film, you _______ (not/feel) so tired.

4. Uh-oh! I can’t find my credit card. -  You (might/ leave) _______it at the cash register at the grocery store.

5. Listen, I just heard this. Mr. Milner isn’t going to be our teacher anymore. He has joined the navy. - B: You (must/ kid) _______! That can’t be true. Who told you that?

Câu 30. The _________ of the outbreak of the disease is still unknown.

A. aim

B. reason

C. cause

D. motive

Clear selection

Câu 31. The tabloids completely _________ that story about Bruce Willis. It’s not true at all!

A. stood out

B. filled in

C. made up

D. turned over

Câu 32. They were _________ out free tickets to the concert to everyone in the shopping centre.

A. handing

B. holding

C. carrying

D. bringing

Câu 33. We had the volume turned down, so I couldn’t make _________ what they were talking about.

A. up

B. out

C. in

D. off

Câu 34. This fascinating book covers some of the most _________ crimes of the twentieth century.

A. unknown

B. hidden

C. covered

D. infamous

Câu 35. The government should do more for _________ people.

A. usual

B. typical

C. everyday

D. ordinary

Câu 21. I wish he _________ the music so loudly.

A. wouldn’t play

B. won’t play

C. would play

D. doesn’t play

Câu 22. My friend won’t ever lend me his car. I wish he _________ me his car for my date tomorrow night.

A. will lend

B. could lend

C. would lend

D. lends

Câu 23. _________ you lend me some money, please?

A. Should

B. Could

C. Must

D. May

Câu 24. You _________ take things without asking.

A. mustn’t

B. couldn’t

C. don’t have to

D. should

Câu 25. That _________ be Elisha. She’s still in Rome.

A. doesn’t have to

B. has to

C. mustn’t

D. can’t

Câu 26. “You got here in twenty minutes! You (drive) _________ really fast. Normally it’s a forty-minute drive.” “No faster than usual.”

A. may have driven

B. can drive

C. must have driven

D. could have driven

Câu 27. The baby is only a year old, but she _________ a few words.

A. could already say

B. was already able to say

C. should already say

D. can already say

Câu 28. Do you know who _________ the fact that sound travels in waves?

A. invented

B. developed

C. discovered

D. found

Câu 29. I’m thinking of getting a fax _________.

A. machine

B. engine

C. motor

D. instrument

Câu 30. The _________ of the outbreak of the disease is still unknown.

A. aim

B. reason

C. cause

D. motive

Câu 9 I found _________ money under my bed this morning.

A. an

B. a

C. some

D. any

Câu 10. Gary is very busy with his job. He has _________ time for other things.

A. few

B. a few

C. little

D. a little

Clear selection

Câu 11. It’s not a very interesting place to visit, so _________ tourists come here.

A. few

B. a few

C. little

D. a little

Clear selection

Câu 12. Her diet’s not very healthy. She eats _________ meat but very _________ vegetables.

A. a lot of/ few

B. much/ few

C. a lot of/ little

D. much/ little

Câu 13. There’s _________ information on the Internet, but unfortunately, there are _________ really good sites.

A. many/ little

B. a lot of/ little

C. a lot of/ few

D. many/ few

Câu 14. “I’ve got Jim’s book. Can you give it to him, please?” “Well, if I _________ him, I’ll give it to him.”

A. will see

B. saw

C. see

D. have seen

Câu 15. If I _________ (live) in a bigger house, I would be able to invite friends over.

A. had lived

B. lived

C. live

D. might live

Câu 16. “Suppose you _________ lost, what would you do?” “I’d go to a police station.”

A. got

B. will get

C. would get

D. get

Câu 17. If you _________ to the supermarket, _________ some milk.

A. will go/ buy

B. will go/ you buy

C. go/ you buy

D. go/ buy

Câu 18. Downloading music _________ quick if you _________ a good Internet connection.

A. was/ have

B. is/ had

C. is/ have

D. will be/ had

Câu 19. I wish I _________ to buy a new car.

A. can afford

B. could afford

C. would afford

D. am able

Câu 20. If I had locked up my bike, it _________ have been stolen.

A. couldn’t

B. will

C. would

D. wouldn’t

There are _________ letters on the table. They’re for you.

A. no

B. any

C. some

D. each

There are many guests in the hotel. _________ one has their own room.

A. Each

B. Every

C. Any

D. No

Would you like _________ omelette for dinner?

A. ---

B. an

C. a

D. some

11. Tìm các số tự nhiên x;y thỏa mãn 3^x -2^y = 1
 

10. Tìm các số tự nhiên x,y thỏa mãn 2^x +3 = y^2

Tìm các số tự nhiên x+ 3/x=10, tính P=x^2/x^4+9

3. Tìm các số tự nhiên n để 2^n +57 là số chính phương