Câu hỏi: Peasants spend most of their time on the ground, ...................... many speciesstay in trees at night.

A. if

B. though

C. because

D. as well as

Câu 1: If you’re too ill to come,     ......................................

A. I’ll come over and see you

B. I wouldn’t have done all this for you

C. I asked someone else

D. I’d have come to see you

Câu 2: ......................... any difficulty operating the machine, do not hesitate totelephone our service department.

A. Should you have

B. If you should

C. In case you have

D. Unless you have

Câu 3: The farmers got their crops ................... earlier than they hadexpected.

A. picked 

B. has picked

C. pick

D. was picked

Câu 4: If they offered you the job, .................................... ?

A. will you accept it

B. have you accepted it

C. would you have accepted it

D. do you think you would accept it

Câu 5: Exactly .............. we can replace our soil disappearing through erosion is not known.

A. what

B. how

C. if

D. because

Câu 6: If you’re not coming, ............................

A. we had not been in such trouble

B. you may need to tell me

C. we’d never met

D. you’d be so lucky