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It is time __________ wheat.

　 A. for sow　　　 B. of sowing　　 C. to sow　　　　　 D. to sowing

The naughty boy always pretends to be a forecaster to _________(預(yù)報(bào)）the weather.

John told the story again from the beginning. Apparently he forgot where he_____ last time.

A. gave off 　　　 B. laid off 　　　 C. put off 　 　　　 D. left off

—You see, I’m poor in maths, you are not good at English, and...

— That’s ____ we should help each other.

A. when　　　　 　　 B. where　　　　 C. how　　　　 　　　 D. what

　　　　　 I were rich, I would go traveling around the world.

　　 A. If only　 B. Even if C. What if　　 D. Only if

“When _____ he come?” “I don’t know, but when he _____, I’ll tell you.”

A. does, comes　　　　 B. will, will come

C. does, will come　　 D. will, comes

___________________________（在不同的城市工作）, the couple spends lots of time travelling in the train or planes for reunion. (different)

Why the explosion occurred was ________ the laboratory attendant had been careless.

A. for

B. because

C. since

D. that

The man we followed suddenly stopped ad looked as if     whether he was going I the right direction.

A. seeing         B. having seen　　 C. to have see    D. to see