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

A. pack

B. swarm

C. flock

D. crowd

Câu 1: The children _____ a line, then walked quietly into school.

A. gathered

B. stood

C. formed

D. performed

Câu 2:  Mr and Mrs Green ____ a party for their daughter’s twenty-first birthday.

A. invited

B. formed

C. gave

D. called

Câu 3: You direct me to the nearest garage? One of my tyres is _____ .

A. compressed

B. depressed

C. uneven

D. flat

Câu 4:  I usually listen to the weather _____, though I have little faith in it.

A. notice

B. warning

C. announcement

D. forecast

Câu 5: 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 6:  The plain occupies the west, south and central parts of the continent, though considerable variations are to be found over so ______ an area.

A. expensive

B. expansive

C. extensive

D. defensive