题目内容
-Why do you know so much about old things?
-Because I ________ in a museum of natural history.
used to work
used to working
was used to working
use to work
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题目内容
-Why do you know so much about old things?
-Because I ________ in a museum of natural history.
used to work
used to working
was used to working
use to work
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||