Our teacher is always the first ___ and the last ___ in our schoolA.come ,to leave B.to come,to leave c.coming,leaving D.come,leave为什么选B?

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/28 19:56:52

Our teacher is always the first ___ and the last ___ in our schoolA.come ,to leave B.to come,to leave c.coming,leaving D.come,leave为什么选B?
Our teacher is always the first ___ and the last ___ in our school
A.come ,to leave B.to come,to leave c.coming,leaving D.come,leave
为什么选B?

Our teacher is always the first ___ and the last ___ in our schoolA.come ,to leave B.to come,to leave c.coming,leaving D.come,leave为什么选B?
be动词后面不能直接跟动词原形.第二个空的to也不可以省略.to do表示一种经常,频繁的状态.