单项选择题

He was ______ on the telephone so I asked him to speak more clearly.

A．muttering
B．compiling
C．groping
D．certifying
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单项选择题
There's a shop in town which sells all the latest photographic ______.
A．articles
B．wares
C．commodities
D．apparatus
单项选择题
Your first evaluation will be six months after you ______ employment.
A．commend
B．commence
C．commute
D．conclude
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