Question

The roof began to fall ______ she had time to dash into the room to save her baby.

A．after

B．as

C．before

D．until

Answer 1

C

考查连词。A. 在……之后   B. 当……时  C. 在……之前  D. 直到……。句意：在她还没来得及冲进房间去救她的婴儿前，房顶就开始下降。选C。