Tick bites（蜱虫叮咬）are reported _______ in 12 provinces and claimed 31 lives since

题干

Tick bites（蜱虫叮咬）are reported _______ in 12 provinces and claimed 31 lives since 2007.

A．to break out	B．to have broken out
C．to be broken out	D．to have been broken out

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