9. Scientists _________know a lot.
- A are supposed to
- B suppose to
- C are supposing to
- D supposed
9. Scientists _________know a lot.
9.A【解析】be supposed to do sth.意为“应该做某事”。
1、Scientists doubt whether it's______to
Scientists doubt whether its______to regulate ones biological clock by drinking.AfeasibleBincredibleCfashionableDvaluable
2、9. ___________ of them has any great a
9. ___________ of them has any great ability.A None ofB NoneC No.D No one
9.I have a ___________.A twin sistersB twins sistersC twins sisterD twin sister
4、The fire _______ a lot of smoke but li
The fire _______ a lot of smoke but little damage was done.A gave awayB sent offC sent upD gave off
5、30. Radio is used a lot because_______
30. Radio is used a lot because__________ _.Ait costs less than TVBit costs more than TVCit is not so cheap as TVD people cant know the news on TV
6、I have a lot of readings _____ before
I have a lot of readings _____ before the end of this term.A completingB to completeC completedD being completed