问题
选择题
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
答案
答案：B
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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
答案：B