I've read all the books ______________ were borrowed from the library.

[    ]

A. they   B. which   C. /   D. that

This is the best hotel in the city ______________ I know.

[    ]

A. it   B. where   C. that   D. which

I'm looking for the bottle which is ______________ vinegar.

[    ]

A. filled of   B. full with   C. filled with   D. fill with

A secretary's job isn't easy ________________.

[    ]

A. to be done   B. of doing   C. to do   D. done

It's very important for us to keep the air and water ______________.

[    ]

A. to be cleaned   B. clean   C. cleaning   D. cleaned

There have been a great increase _________________ the world's population in recent years.

[    ]

A. in   B. on   C. at   D. of

Tom has eaten all the food up, there's nothing ______________.

[    ]

A. left   B. being left   C. to be left   D. leaving

The electric wires are ________________ high that no children can reach them.

[　　]

A. so   B. too   C. as   D. not

In the forest, the ground is always covered with _____________ leaves.

[    ]

A. fall   B. falling   C. fell   D. fallen

This man is hurt badly, we must try to stop the ______________ immediately.

[    ]

A. blood   B. bleed   C. bleeding   D. blooding