Câu hỏi: What would you do if war .......................... ?

A. break out

B. will break out

C. were to break out

D. breaks out

Câu 1: The first hamburgers ..................... in Connecticut in 1895.

A. are sold 

B. were sold

C. sold

D. have been sold

Câu 2: If you'd told me you were coming, .............................

A. I can get some food in

B. I’d have found us something to eat

C. I made a lovely dish

D. I’ll buy some more food

Câu 3: Exactly .............. we can replace our soil disappearing through erosion is not known.

A. what

B. how

C. if

D. because

Câu 4: Send my regards to Lawrence ............................ you see him.

A. if

B. in case

C. whether

D. provided

Câu 5: ......................... 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 6: A small design fault ................. on our latest chip.

A. has found

B. found

C. has been found 

D. find