ithavebeenthefailuretopickupdi

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______ it have been the failure to pick up directions from the ground control that caused the air crash?

A．Must

B．Could

C．Would

D．Should

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The government has taken some measures to solve the shortage of water, but it may be some time __ the situation improves.

A．since

B．when.

C．unless.

D．before.

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After driving for thirty miles. he suddenly realized that he in the wrong direction.

A．had been driving.	B．had been driven.
C．has been driving.	D．was driven.

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I broke the dish I wanted to show my anger.

A．on purpose.

B．as usual.

C．at present.

D．in fact.

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I could hardly wait to tell Jim the good news but I had to before I could speak.

A．set down.

B．give in

C．come up

D．calm down

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you should go on trip to Italy with us because you won’t get second chance.

A．the; a

B．the; the

C．×；a

D．×；the

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