他不必那么早到校He_______ ______ _______ ________at school so early
问题描述：
他不必那么早到校He_______ ______ _______ ________at school so early
答
1 doesn't need to be / arrive
2 doesn't have to arrive / be
3 didn't need / have to be / arrive
(以上是初中英语)
4 need not have arrived
(以上是高中英语)