Câu hỏi: Conservation is the safeguarding and preservation of nature resources.

A. is

B. safeguarding

C. preservation

D. nature

Câu 1: Abraham Lincoln was a good president and was self-educated, hard working and always told the truth.

A. a good president

B. self-educated

C. hard working

D. always told the truth

Câu 2: Thanks for the liberation of women, women can now take part in social activities.

A. thanks for

B. liberation of

C. can

D. take part in

Câu 3: Please tell us the reason when he left without saying goodbye.

A. tell

B. when

C. left

D. saying

Câu 4: This apprentice has spent two weeks to work on that new machine.

A. has spent

B. to work

C. on

D. new machine

Câu 5: Unless there had been a heavy storm, the climbers will not have died.

A. Unless

B. had been

C. heavy

D. will

Câu 6: He was very surprised when he visited London, in that the drivers always drive on the left hand side of the street.

A. very surprised

B. when

C. in that

D. on