单项选择题

Please give us the reason______the goods were delayed．

A．why
B．which
C．what
D．how
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单项选择题
I feel it's a great honor for me______to this party．
A．to invite
B．invite
C．having invited
D．to be invited
单项选择题
Peter will______the job as Sales Manager when John retires．
A．put away
B．take over
C．work out
D．make up
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