The street in front of our house was narrow before .(保持愿意）The street in front of our house ____ ____be narrow .

The street in front of our house was narrow before .(保持愿意）The street in front of our house ____ ____be narrow .
The street in front of our house was narrow before .(保持愿意）
The street in front of our house ____ ____be narrow .

The street in front of our house was narrow before .(保持愿意）The street in front of our house ____ ____be narrow .
The street in front of our house _used_ __to__be narrow .

used to

used to be 过去常常

used to (过去是……的)