Câu hỏi: If you do decide to come, ............................

A. the party’s always a success

B. we would have been so happy

C. I won’t be coming either

D. let me know

Câu 1: Take John's address with you, ................... you have time to see him whenyou’re in London.

A. if

B. unless

C. in case

D. so long as

Câu 2: Exactly .............. we can replace our soil disappearing through erosion is not known.

A. what

B. how

C. if

D. because

Câu 3: If you ................... a pet bird, you’ll have to buy a cage, too.

A. buy

B. will buy

C. bought

D. had bought

Câu 4: Applicants ................ send in their CVs.

A. asked

B. ask to 

C. are asked to

D. asked to

Câu 5: A new chairman ................. by our staff.

A. chose

B. was chosen 

C. choose 

D. have been chosen

Câu 6: 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