The old couple married for 40 years and never once____ with each other.
| A．they had quarreled. | B．they have quarreled |
| C．have they quarreled | D．had they quarreled. |
9. There are many students of Grade Three reading in the reading room, most of _________ with their heads buried in their reference books and notebooks.
| A．them | B．whom | C．which | D．That |
8. We believe _________ you have devoted yourself _________ sure to come true.
| A．that; is to | B．all that; to be | C．that all; to are | D．what; to is |
7. Intelligence does not _________ mean success. You need diligence as well.
| A．honestly | B．formally | C．simply | D．necessarily |
6. The factory has to stop working for a day _________ the machines can be cleaned.
| A．in case | B．supposing that | C．the moment | D．so that |
5. —Jack, could I use your laptop for a while?
—_________. Go ahead, please.
| A．With pleasure | B．No way | C．By all means | D．Come on |