—Shall I lock the lab now before I go home?
—______.I’ll check it myself later.
| A．Go ahead | B．No problem |
| C．No hurry | D．Don’t bother |
The problem _______ you argued about yesterday has been solved.
| A．that | B．what | C．why | D．for which |
My aunt bought me a book, the name _______ I have forgotten.
| A．of it | B．which | C．whose | D．of which |
On the way home I met my friend John, from _______ home the thief had stolen a computer.
| A．whom | B．which | C．that | D．whose |
I hate the way _______ you talk to your mother.
| A．by which | B．on which | C．in which | D．which |
At last we found the hole in the wall _______ the mouse got into the house last night.
| A．in which | B．which | C．through which | D．by which |