-Your mother _______ take a bus to work?
-Yes. But now she usually goes to work on foot.
| A．use to | B．used to |
| C．was used to | D．is used to |
-Your mother _______ take a bus to work?
-Yes. But now she usually goes to work on foot.
| A．use to | B．used to |
| C．was used to | D．is used to |
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