The fireman____to climb the ladder,____a widow on the first floor,and _____the building.
问题描述：
The fireman____to climb the ladder,____a widow on the first floor,and _____the building.
A.wantched;broke;entered B.han been watched;breaking;enter
C.was watching;breaking;entering D.was watched;break;enter
答
D 句子的意思为人们看到消防员爬上*,打破了一楼的窗户并进入了大楼.句中强调人们看到消防员的动作,应该用被动语态,因为消防员是被看到……的,break和enter这两个动词前面省略掉了was watched to,所以后面用动词原形.