The street in front of our house was narrow before .(保持愿意)The street in front of our house ____ ____be narrow .
问题描述:
The street in front of our house was narrow before .(保持愿意)
The street in front of our house ____ ____be narrow .
答
used to (过去是……的)
答
used to be 过去常常
答
The street in front of our house _used_ __to__be narrow .
答
used to