the thief was seen ()the house.so the police came quite soon and.1 to enter 2 entered 选哪个?为什么
问题描述：
the thief was seen ()the house.so the police came quite soon and.
1 to enter 2 entered 选哪个?为什么
答
to enter 。
答
entered
过去式，小偷被看到进入房间
答
to enter
被动语态的时候,to 要补上来
一般是see sb do sth,