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
A.wantched;broke;entered B.han been watched;breaking;enter
C.was watching;breaking;entering D.was watched;break;enter
问题解答:
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