单项选择题

The board meetings usually ______ on time.

A． have started
B． start
C． are starting
D． have been starting
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单项选择题
My supervisor had me ______ the morning taking inventory.
A． spend
B． to spend
C． spent
D． spending
单项选择题
Paychecks______.
A． are twice distributed a month
B． twice a month are distributed
C． are distributed twice a month
D． a month are distributed twice
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