It is very（）to pick your teeth at the table.

It is not your business to reprove the waiter for（）conduct；that belongs to your host.

A.properly
B.improperly
C.improper
D.proper

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We must make a claim on you for（）with regard to this shipment，for it is not equal to the samples submited.

A.compensating
B.compensation
C.beiing compensated
D.having compensated

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