Câu hỏi: We’ll have to break the ice on the pond; otherwise the ducks .............. swim.

A. are not able to

B. will not be able to

C. would not be able to

D. would not have been able to

Câu 1: .................................. , the phone will be cut off.

A. If you paid the phone bill today

B. Unless you pay the phone bill today

C. On condition that you had paid the phone bill before

D. In case you have paid the phone bill

Câu 2: The first hamburgers ..................... in Connecticut in 1895.

A. are sold 

B. were sold

C. sold

D. have been sold

Câu 3: ......................... 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 4: Be careful about the time. If you .................. too long on the first question,you ............... enough time to do the others properly.

A. had spent - would not have

B. had spent – would not have had

C. spend - will not have

D. spent - would not have had

Câu 5: 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 6: The hurricane was so strong that it damaged the whole area ........................ itwas approaching or receding.

A. whether

B. and if

C. but

D. because