单项选择题

Babies begin to be ________ sounds three months after they are born.

A．responsible for
B．retort to
C．responsive to
D．reply
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单项选择题
The driver responsible for the accident was ________ punished.
A．seriously
B．totally
C．severely
D．clearly
单项选择题
It is too noisy in the room, we had to use ________ to get those trouble makers out of the place.
A．force
B．power
C．vigor
D．strength
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