Câu hỏi: He said that he has done his homework since 7 o'clock.

A. said

B. has done

C. homework

D. since

Câu 1: Many teachers have devoted their lives to teaching therefore teaching is not a well-paid job.

A. devoted

B. lives

C. teaching

D. therefore

Câu 2: If I had enough money, I would have travelled around the world.

A. enough

B. would have travelled

C. the

D. world

Câu 3: The workers went on strikes because of they thought their wages were low.

A. on

B. because of

C. thought

D. were

Câu 4: The US, that is one of the most powerful countries, decided to declare a war to Iraq.

A. that

B. powerful

C. decided

D. a war to

Câu 5: In the end of the party, Mary found herself washing the dishes alone again, as usual.

A. In the end of

B. herself

C. washing

D. as usual

Câu 6: Air pollution, together with littering, are causing many problems in our large, industrial cities today.

A. with

B. are

C. many

D. in our large