While we were running on the playground,Jack suddenly stopped ___________ and lay on the ground,so we all stopped ___________ what was wrong with him.
| A．running; to see | B．running; seeing |
| C．to run; to see | D．to run; seeing |
Mr. Brown has stopped drinking since he ____ on.
| A．will operate | B．will be operated |
| C．operated | D．was operated |
—Must I tell John the bad news now?
—No, you________. He can’t stand it.
| A．must | B．won’t |
| C．needn’t | D．can’t |
The foreigners arrived _________ Beijing late _________ a rainy evening.
| A．at; at | B．in; on |
| C．in; in | D．at; in |
—Would you like to go hiking with us tomorrow?
—Sure, ________ I am busy.
| A．since | B．unless | C．when | D．until |
Sally takes more time on her study because she believes ________ she does, _______ she’ll be.
| A．more; the better | B．the more; better |
| C．the more; the better | D．more; better |