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The problem, according to the experts, is ________ we should do with the salty land.

A. what　　　 B. whether　　　　 C. how　　　　　 D. that

Everything depends on ________ we have enough time.

A.    that B. how C. if D. whether

It's nearly seven o'clock . Jack _____ be here at any moment .

A. must　 B. need　 C. should　　 D. can

Let your little brother play your toys as well, Alice — you must learn to ______.

　 A. support　　　 B. spare　　　 C. share　　　 D. care

The experiment has_________ the possibility of the existence of any life on that planet, but it does not mean there is no life on other planets.

A. found out　　 B. pointed out　 C. ruled out　　 D. carried out

I’m sure that your letter will get______ attention. They know you’re waiting for the reply. 
 A. continued   B. immediate   C. careful   D. General

really appreciate _______to help, but I am sure I can manage myself.

A.you to offer　 B. you offer　 C. your offering　 　 D. that you offered

The place _______interested me most was the Children's Palace.

A. Which 　　 B. where 　　 C. what 　　 D. in which

He ____ to lend me his bike but I refused, for I didn’t want to trouble him.

A. failed 　 B. offered　 C. considered 　 D. insisted