The letter“X”can ________ an unknown number．

A．be used to express

B．be used to expressing

C．use to express

D．use for expressing

Please remember ________ your hands before dinner．

A．washed

B．being washed

C．to wash

D．washing

Do you remember ________ the policeman before?

A．seeing

B．to see

C．saw

D．to be seen

The bad weather prevented us ________．

A．from going out

B．to go out

C．gone out

D．went out

To prevent the air ________, something will have to be done．

A．to pollute

B．to be polluted

C．from polluting

D．from being polluted

She used to have ________ with her husband．

A．a word

B．the word

C．words

D．some words

Someone is asking for you, May be he will have ________ you．

A．the word with

B．a word with

C．some words to

D．words to

________ fails to finish the task given should be criticized．

A．Any one who

B．Anyone who

C．Anyone which

D．Any one

________ care for nobody but himself will never get along well with the others．

A．That

B．These

C．Those who

D．Who

The earth must be made ________ more people．

A．supported

B．supporting

C．to support

D．support