题目内容

Maggie the floor when she _the door bell ring.
A：was sweeping … heard
B：swept … heard
C：was sweeping … was hearing
D：swept … was hearing

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The smile on her face ________ that she was willing to go.
A：suggested
B：explained
C：supposed
D：insisted

The key to _________ laws lies in devotion and responsibility of the staff concerned.
A：enriching
B：enrolling
C：enlarging
D：enforcing

我们会尽最大努力来帮助她做这个工作。

他们虽然读了这些书，但并没有完全理解。