问题
The disease, ________, could spread very fast.
A:unless well controlling
B:if not well controlled
C:when not to control
D:although not being well controlled
B:if not well controlled
C:when not to control
D:although not being well controlled
正确答案是：
同类题型
When my mother ______ home, I was making some cards.
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I have a pen . I like very much .
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