单项选择题

My pain ______ apparent the moment I walked into the room for the first man I met asked sympathetically: "Are you feeling all right"

A．must be
B．had
C．must have been
D．had to be
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单项选择题
Being impatient is ______ with being a good teacher.
A．intrinsic
B．ingenious
C．incompatible
D．inherent
单项选择题
To impress a future employer, one should dress neatly, be______ , and display in the job.
A．swift
B．instant
C．timely
D．punctual
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