Does the way you thought of ________ the water clean make any sense?
| A．making | B．how to make | C．to make | D．having made |
China is one of the developing countries ________ the third world.
| A．belongs to | B．belonging to |
| C．is belonging to | D．belonged to |
—How long ________ at this job?
—Since 1990.
| A．had you been employed | B．have you been employed |
| C．were you employed | D．will you be employed |
According to today’s newspaper, the escaped prisoner threatened to _____ the police station in the near future.
| A．use up | B．show up | C．blow up | D．call up |
Mary heard ____strange sound at ____midnight outside her house and got scared.
| A．a; / | B．the; / | C．/; the | D．/; a |
He opened the door. There ________ he had never seen before.
| A．a girl did stand | B．a girl stood |
| C．stood a girl | D．did a girl stand |