The shop owner didn't have the camera I wanted but said he would________ one________ for me when he had some.

A. set; aside 　　 　B. let; alone 　　

C. put; away　 　　 　D. leave; behind

I’ve got about $10 in my w_______________. （钱包）

The fact has worried many scientists _____ the earth is becoming warmer and warmer these days.

A. what B. which C. when D. that

I ______ you my bicycle, but I didn't expect you would come back so soon·

A. might lend　 　　　B. may lend　 　　

C. must have lent D. might have lent

No one really knows exactly when the first people arrived in　　 we now know as California

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

Operation rooms should be kept free ______ bacteria of any kind.

A. with　　　 B. for　　　　 C. from　　　 D. to

It is ______(显而易见的) that he told a lie.

I have ______ my husband again and again not to smoke , but I can’t ______ him．

A．persuaded, advise　 　　　　　　 B．advised, persuade

C．suggested, persuade 　　　　　 D．suggested, advise

People will have no fish to eat because of the _____ water.

A. pollution 　 B. Polluted　 C. polluting 　 D. pollute