. “Shall we stop for lunch _____ shall we drive on？” “Let’s stop for lunch, but the driver can’t drink _____ drive.”
| A．and, and | B．or, or | C．and, or | D．or, and |
I won’t call you ________ something unexpected happens.
| A．while | B．whether |
| C．because | D．unless |
The foreign guests, ____ were government officials, were warmly welcomed at the airport.
| A．most of them | B．most of which |
| C．most of whom | D．all of those |
He is writing a letter______ a pen that I have never seen before.
| A．by | B．with | C．for | D．at |
________ the boy didn't take medicine made his mother angry.
| A．That | B．What |
| C．How | D．Which |
I don’t know ________ is in charge of English department.
| A．that | B．which | C．who | D．where |