1“There is no reason to be”中to be的用法
2像sit,wait 延续性动词加时间后面必须跟for吗
3be off是否带有未来之意
4”It's rude to talk with your mouth full of food"什么情况下名词后可以跟形容词作定语
5__is a good way of excise for both young and old A.Walk B.Walking
6是there has been还是there have been
7“leave sth.+地点”地点前必要时要加介词吗
8make a living有没有复数形式
5名词不可以做主语吗
1.there is no reason to do something...没有理由做某事。（接动词原形）2.不一定，但是如果接一段时间的话要用for 2hours 类似这样的搭配。3.I will be off.我将离开=I will leave4.5.Walking 动名词或不定式可以作为主语，这里选B6有必要，LEAVE SOMETHING IN SOME PLACE （如果是HOME，就用LEAVE SOMETHING AT HOME)7.无
