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We should make ________ clear to every student that English is ________ great use．

A．that;/

B．it;/

C．/; of

D．it; of

There was a strange sound outside．Mary went out and ________ around, but she ________ nothing．

A．saw; saw

B．looked; saw

C．watched; looked

D．looked; watched

I live in the house ________ windows face the south．

A．which

B．whose

C．where

D．in that

A party ________ for her tomorrow．

A．is held

B．will be held

C．has been held

D．was held

The classroom ________ now．

A．is cleaning

B．is being cleaning

C．is being cleaned

D．is cleaned

________ his work ________ yet?

A．Have; been finished

B．Has; been finished

C．Has; finished

D．Have; finished

The child will ________ back to his parents next month．

A．sent

B．send

C．be sent

D．be sending

Our compositions must ________ next Monday．

A．be hand in

B．be handed in

C．handed in

D．be handing in

Great changes ________ in the town since 1988．

A．have taken place

B．have been taken place

C．has taken place

D．has been taken place

Food ________ in a cool place in summer．

A．must keep

B．mustn't keep

C．must be kept

D．mustn't be kept