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

A. Unless

B. had been

C. heavy

D. will

Câu 1: The mother asked her son if he would have the floor clean the day before.

A. asked

B. if

C. would have

D. clean

Câu 2: The puppy stood up slowly, wagged its tail, blinking its eyes, and barked.

A. slowly

B. its

C. blinking

D. and

Câu 3: Teddy Roosevelt demonstrated his competitive spirit and tireless energy in 1905 whenever he led the Rough Riders up San Juan Hill.

A. demonstrated

B. competitive

C. whenever

D. he

Câu 4: 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 5: In spite of my father is old , he gets up early and does morning exercise.

A. In spite of

B. is

C. gets up

D. does morning exercise

Câu 6: Ecologists are trying to preserve our environment for future generations by protecting the ozone layer, purifying the air, and have planted the trees that have been cut down.

A. to preserve

B. for

C. the ozone layer

D. have planted