Câu hỏi: High in the sky a _____ of birds was flying southward.

A. pack

B. swarm

C. flock

D. crowd

Câu 1: Spies may have a number of _____ names and papers.

A. artificial

B. synthetic

C. false

D. imitation

Câu 2: As the storm drew nearer, black clouds were _______ over the sky.

A. wondering

B. gathering

C. picking

D. watering

Câu 3: The gardener ______ a bucket with water so that he could plant the vegetables.

A. filled

B. flowed

C. stuffed

D. piled

Câu 4: Why can’t you do this small _____ for me? I’ve helped you often enough in the past.

A. demand

B. effort

C. favour

D. influence

Câu 5:  Mr and Mrs Green ____ a party for their daughter’s twenty-first birthday.

A. invited

B. formed

C. gave

D. called

Câu 6: With the invention of the train, man could travel overland _____ without the need of horses.

A. voluntarily

B. freely

C. independently

D. readily