问题：
There ______many restaurants in town, but they _________ eat the food there at first.
A．used to have, didn’t use to
B．used to have, didn’t used to
C．used to be, didn’t use to
D．used to be, didn’t used to
There ______many restaurants in town, but they _________ eat the food there at first.
| A．used to have, didn’t use to | B．used to have, didn’t used to |
| C．used to be, didn’t use to | D．used to be, didn’t used to |
参考答案：