This is the only article of these that ________ written by him．

A．was

B．were

C．is

D．are

This is the best book ________ I have been looking for all this year．

A．who

B．whom

C．which

D．/

Please show me the book ________ you bought yesterday．

A．which

B．whom

C．whose

D．this

________ cleans the blackboard should be praised．

A．That

B．Who

C．The one who

D．The students who

The girl handed everything ________ she had picked up in the street to the police．

A．which

B．in which

C．that

D．all

The only language ________ is easy to learn is the mother tongue．

A．which

B．that

C．/

D．it

Is this factory ________ a lot of students visited yesterday?

A．the one

B．that

C．which

D．/

Is this the factory ________ a lot of students visited yesterday?

A．the one

B．which

C．who

D．whom

The girl ________ you saw in the street is Mary．

A．that

B．whose

C．which

D．as

The man ________ lives next to us is my English teacher．

A．who m

B．which

C．who

D．/