单项选择题

He has forgotten what ______ are involved and the time taken ______ delivery. ( )

A．formalities, in
B．procedures, for
C．formalities, for
D．procedures, in
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单项选择题
Your arguments for claim ( ) .
A．is not convincing
B．are convinced
C．are not convincing
D．has been convinced
单项选择题
We'd like to express our satisfaction ( ) receiving Certificate of Health.
A．at
B．for
C．to
D．on
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