They love their daughter so much that they are always ready to do everything the

题干

They love their daughter so much that they are always ready to do everything they can ________ her happiness.

A．to make sure of	B．make sure of
C．be sure of	D．to be sure of

上一题下一题 0.85难度单项选择更新时间:2011-02-26 09:20:49

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