[单选题]Returning to my apartment, ( ) .

[单选题]He sent me an e-mail, ( ) to get further information.

[单选题]( ) in 1636, Harvard is one of the most famous universities in the United States.

[单选题]My family sent my cousin an E-mail ( ) his passing the Entrance Examination.

[单选题]Did you smell something ( ) ?

[单选题]He was seen ( ) something from the shop.

[单选题]While waiting for the opportunity to get ( ) , Henry did his best to perform his duty.

[单选题]Remember ( ) off the lights when you leave the room, please.

[单选题]It rained heavily in the south, ( ) serious flooding in several provinces.

[单选题]There are still many problems ( ) before we are ready for a long stay on the Moon.

[单选题]He hurried to the hospital, only ( ) his father hadjust died.

[单选题]I used ( ) on the left in England, but I soon got used ( ) on the right in China.

[单选题]It’s no use ( ) with him since he has made up his mind.

[单选题]My mobile phone isn’t working. It ( ) .

[单选题]Julie spent one month ( ) her term paper on Chinese poems.