单项选择题

Dr. Johnson ______ the patient of the safety of the operations.

[A] guaranteed
[B] confirmed
[C] assured
[D] committed
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单项选择题
If a substance is dissolved in water or heated, it may ______ a gas.
[A] give away
[B] give in
[C] give off
[D] give back
单项选择题
Who would you rather ______ with you, George or me
[A] going
[B] to go
[C] have gone
[D] went
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