721.Mary called me this morning and said that she had to ____ from school for two days to look after her mother in hospital.
A.keep away
B.stay away
C.leave away
D.take away
722.Bill Gates was so nice that he decided to _____ ninety percent of his money to the charities.
A.give up
B.give away
C.give out
D.give off
721.答案是B;
keep away from远离,不靠近;stay away 外出,离开;take away 取走,拿走。
722.答案是B;
give away赠送,颁发,泄露,告发;give out分发,公布,用完,耗尽;give off发出,放出;give up放弃,自首。