In China, all the students work hard at school _________ going to university for higher education in the future.
| A．in the habit of | B．in the hope of | C．in search of | D．in honor of |
—Is there a fog in the evening ?
—There be . I’ll make a phone call to find it out .
| A．must | B．would | C．will | D．might |
John waited at the bus-stop for nearly half an hour the bus finally arrived .
| A．when | B．as | C．before | D．while |
Only according to the directions can the medicine be quite effective .
| A．taking | B．taken | C．being taken | D．having been taken |
—I really don’t know how to thank you enough .
—.
| A．No problem | B．Think nothing of it |
| C．Not at all | D．It doesn’t matter |
—Mark broke his leg when he was playing football .
—was that ?
| A．Since when | B．Since when ago | C．How long | D．How long ago |