216. —May I go and play football with Dick this afternoon, Dad?
—No, you can’t go out ________ your work is being done.
A. before B. until C. as D. after
217. A warning news report from Qatar announces that a group of Islam will continue to kill Americans wherever they are ________ they leave the Arab world forever.
A. even though B. in case
C. whenever D. until
218. I was so familiar with her that I recognized her voice ________ I picked up the phone.
A. the moment B. after C. before D. while
219. —How about going hiking this weekend?
—Sorry. I prefer ________ rather than ________.
A. to stay at home;go out B. to go out;stay at home
C. staying at home;go out D. going out;stay at home
220. You can either sing ______ dance on weekends.
A. and B. on C. or D. on
216-220 CDAAC
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