1.Billy has difficulty _____the rest of the class.
问题描述：
1.Billy has difficulty _____the rest of the class.
A.to keep up with B.to keep up
C.keeping up with D.keeping on
正确答案是C
2.The passengers were robbed ______all their money.
A.of B.off C.from D.away
正确答案是A
3.People who won'twork should be made _____.
A.to work B.work
C.working D.to be working
正确答案是A
答
1..首先知道词组have difficulty (in)doing sth就可以排除ABc.keep up with跟上(Billy很难跟上其他同学)d.keep on保持,根据意思排除2..rob sb of sth 抢某人某物steal sb sth偷某人某物这个句子用了被动语态3..make...