单项选择题

A．service
B．help
C．assistance
D．benefit
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单项选择题
A．evaluationsB．guessC．estimatesD．calculations
A．evaluations
B．guess
C．estimates
D．calculations
单项选择题
A．The mail was sent back to the post office.B．He doesn’t have anything to drop in the mailbox.C．It’s too soon to go hack there.D．The post office is closed for an hour.
A．The mail was sent back to the post office.
B．He doesn’t have anything to drop in the mailbox.
C．It’s too soon to go hack there.
D．The post office is closed for an hour.
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