In the dark street, there wasn’t a single person ________ she could turn for help．

A．that

B．who

C．from whom

D．to whom

He’ll remember the days ________ he spent with his pupils．

A．/

B．where

C．what

D．in which

The mice built tunnels ________ they can get rice in the fields．

A．which

B．on which

C．by which

D．through which

He has lost the key to the desk ________ the papers are kept．

A．which

B．that

C．in which

D．in that

Is this factory ________ you want to visit tomorrow?

A．which

B．that

C．where

D．the one

Is this the hospital ________ you visited the other day?

A．which

B．where

C．in which

D．at which

Pass me the book ________ cover is red．

A．which

B．whose

C．what

D．that

Alice is the only one of the students in our school who ________ Australia?

A．has gone to

B．has been to

C．have gone to

D．have been to

In the old house, Tom washed the ten windows, most of ________ hadn’t been cleaned for years．

A．these

B．those

C．that

D．which

He is one of the foreign experts who ________ Chinese．

A．knows

B．know

C．is known

D．are known