单项选择题

I look forward to（）for this at your earliest convenience.

A.having your approval
B.approved by you
C.get your answer
D.know your opinion

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单项选择题I know nothing（）about it.

A.whatever
B.whichever
C.whoever
D.whomever

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单项选择题I immediately telephoned the engine room to tell（）was happening to the C／E.

A.it
B.this
C.what
D.that

I hold your ship fully responsible（）the accident.A.toB....

单项选择题I hold your ship fully responsible（）the accident.

A.to
B.at
C.for
D.against

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