—What time is it by your watch，John?
—5∶32，Jack.But my watch isn’t quite ________—it gains 2 minutes every day.
| A．key | B．royal |
| C．accurate | D．sacred |
She will tell us why she feels so strongly that each of us has a role _____ in making the earth a better place to live.
| A．to have played | B．played | C．playing | D．to play |
The Russian rocket designer has died. For many years, he ______ as an important assistant to the father of Soviet space program.
| A．serves | B．was serving | C．served | D．has served |
I have been living in the United States for 20 years, but seldom ______ so lonely as now.
| A．have I felt | B．I had felt | C．I have felt | D．had I felt |
—How was your trip to London?
—Great. I was helped by an organization. Otherwise, I ______ it.
| A．wouldn’t afford | B．hadn’t afforded |
| C．wouldn’t have afforded | D．needn’t have afforded |
Our coach says we won’t keep winning games ______ we keep playing well.
| A．because | B．unless | C．when | D．while |