Look,that is our new school building.There _____ old low houses.Look,that is our new school building.There _____ old low houses.A.used to B.used to be C.used to have D.used to having

Look,that is our new school building.There _____ old low houses.Look,that is our new school building.There _____ old low houses.A.used to B.used to be C.used to have D.used to having
Look,that is our new school building.There _____ old low houses.
Look,that is our new school building.There _____ old low houses.
A.used to B.used to be C.used to have D.used to having

Look,that is our new school building.There _____ old low houses.Look,that is our new school building.There _____ old low houses.A.used to B.used to be C.used to have D.used to having
B
used to 过去常常,可译为：看,那是我们的新教学楼.那里曾是一些低矮的老房子.
There+be这是一个固定句式,there后面不可以用have

B

c