1.Robert often asks us ______his Chinese so his chinese is much better than before.
A.to help with B.to help him with （答案:B 解释与A的区别）
2.Will you please ___ me ___ this evening, Meimei?
A. to help;to wash clothes B.to help ;cook super
C.help;with the cooking D.help;doing some washing
（答案：C 解释原因~）
3.I will have my watch_______ because it dosen't work.
A.repair B.repaired （答案：B 不是动词吗？？）
4.Don't waste time _____ computer games.
A.to play B.palying （答案：B 为什么A不行？）
5.Yesterday I was busy_____ the housework.
A.doing with B.doing （答案：C 为什么A不行？）
6.He has an important meeting ____.
A.to take part in B.to enter for
C.to join D.to attend
（答案：D 每个各有什么区别？？）
7.We haven't decided which hotel ____.
A.to stay B.we would stay
C.to stay at D.was to stay at
（答案：C 为什么B不行？）
就这么多 0 0 希望各位耐心详解~~~~~
thx~~~~~~~~~~
2 will 后跟动词原形，不管please，help的用法见上
3 have sth done意思是请别人做某事，比如去剪头发，have hair cut
4 waste （时间）doing sth 固定用法
5 busy doing，do是及物动词，do housework，不用加with，你可能跟be busy with sth混淆了，一个有动词，一个直接跟sth
6 enter是及物动词，所以排除B，参加会议一般就用attend a meeting，AC一般用于活动，游戏之类的
7 首先是stay at hotel，不可以说stay hotel，在旅馆休息，排除AB，D的形式是错的，如果B加个at就对了
