单项选择题

Like any other (constant) repeated action, speaking (has to) be learned, but once it (is learned), it becomes a generally (unconscious) and apparently automatic process.

A．constant
B．has to
C．is learned
D．unconscious
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单项选择题
The lecturer made (too a long) speech, so every listener (felt tired of) him, and (some even went) out of the lecture hall (without getting) the permission from the speaker.
A．too a long
B．felt tired of
C．some even went
D．without getting
单项选择题
(More and more) old people whose (grown-up children) pay little attention to them (gathered) together and organize (interesting activities) for themselves.
A．More and more
B．grown-up children
C．gathered
D．interesting activities
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