So fast _____ that it is difficult for us to imagine its speed.
A. light travels
B. travels light
C. does light travel
D. has light travelled
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_____, he knows a lot of things.
A child as he is
B. Child as he is
C. A child as is he
D. Child as is he
Only after liberation _____ to be treated as human beings.
A. did they begin
B. they began
C. that they began
D. had they began
Never before _____ such a stupid man.
A. I have seen
B. I saw
C. have I seen
D. did I see
_____ are some students singing and laughing.
A. Seating on the grass
B. To be seating on the grass
C. Seated on the grass
D. To be seated on the grass
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