1.--Are you sure there are UFOS?--- Sorry.I'm not sure( of )that
A.to B.at C.of D.in
be sure of something.确信某事,固定搭配
2.His joke made us ( laugh )up and down.
A.to laugh B.laugh C.laughing D.laughed
make somebody do (something).使某人做某事,固定搭配
3.People use robots for ( doing boring work )
A.do boring work B.do boring works C.doing boring work D.to do boring jobs
be used for + 名词(动名词)
4.My parents will go to Beijing ( in three days )
A.three days ago B arter three days C in three days D.before three days
在3天内去北京,will do sth.in +时间段 一般将来式的固定用法
5.Are you sure ( where )he lives?
A.where B.which C.what D.when
你确定他住在哪吗?其他都解释不通.
6.You have to do it in a diffrent way ( in ) a diffrent situation.
A.on B.in C,for D.at
in situation,固定短语