摘要：30．--- Do the Smiths live next door to you? --- No, but they ． A．used to B．used to do C．used to doing D．used to be
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--- Do the Smiths live next door to you?
--- No, but they ．
A．used to B．used to do C．used to doing D．used to be
查看习题详情和答案>>30．--- Do the Smiths live next door to you?
--- No, but they____.
A．used to B．used to do C．used to doing D．used to be
查看习题详情和答案>>
30．--- Do the Smiths live next door to you?
--- No, but they____.
| A．used to | B．used to do | C．used to doing | D．used to be |