_______ there are many different types of food, some animals spend their lives eating only one type.
| A．Since | B．Unless |
| C．Once | D．While |
A man with a bleeding hand hurried in and asked, “Is there a hospital around _________ I can get some medicine for my wounded hand?”
| A．that | B．which | C．where | D．what |
Is it Shakespeare Theatre ______ you are going to watch the play Hamlet?
| A．where | B．that | C．which | D．as |
The factory was built in a secret place, around _________ high mountains.
| A．which was | B．it was | C．which were | D．them were |
She wrote a month ago, ______ we’ve heard nothing.
| A．since when | B．before which | C．since that | D．after which |
I have a lot of books, half of ______ novels.
| A．which | B．that | C．whom | D．them |