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1、Inoticedhim(enter)theroomjustnow.2、Wehadbettergoandaskhimwhenhe(leave).Wemustseehimoffwhenhe(leave).3、She'softenheard(help)theoldmanwiththehousework.

题目详情
1、I noticed him ____ ____(enter)the room just now.
2、We had better go and ask him when he ____ ____(leave).
We must see him off when he ____(leave).
3、She's often heard ____ ____(help)the old man with the house work.
▼优质解答
答案和解析
to enter
will leave
leaves
to help