单项选择题

Jane ______ her boss this morning, asking for a leave, but she forgot.

A．could telephone
B．might telephone
C．should have telephoned
D．must have telephoned
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单项选择题
______ who helped the old lady last year.
A．It were my friend and I
B．It was my friend and I
C．That was my friend and I
D．This was my friend and I
单项选择题
The man shouted at the shop assistant, ______ his arms constantly.
A．waving
B．m wave
C．waved
D．being waved
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