I ________ e-mails to my pen pal when Susan called me last night．

A．was sending

B．am sending

C．sent

D．send

Please don't forget ________ the room while I am away in Beijing．

A．clean

B．to clean

C．cleaned

D．cleaning

All the students in Class 5 will climb the mountain if it ________ rain tomorrow．

A．won't

B．don't

C．didn't

D．doesn't

Do you know the girl ________ is talking to our English teacher．

A．who

B．whom

C．which

D．whose

Over 50 people were killed because of a crash of city railway in Argentina ________ the morning of February 22^nd．

A．in

B．on

C．at

D．of

Yesterday, I went to the Xinhua Book City and ________ some books about English writing．

A．to buy

B．brought

C．bought

D．buys

Could you tell me ________?

A．when will the meeting start

B．when the meeting will start

C．the meeting will start when

D．the meeting when will start

Don't shout at her．She's just a little girl ________．

A．all after

B．after all

C．too

D．although

I ________ by my teacher's home when I was back home last night．

A．dropped

B．dropped on

C．drop in

D．dropped into

She doesn't like the book ________ you are interested ________．

A．which, in

B．which, X

C．who, in

D．that, X