As a teacher rich in experience, he knows how to _______ his ideas to these new students in a limited period of time.
-- Have you seen ______pen? I left it here this morning -- Is it ______black one? I think I saw it somewhere
Great changes ______ in the past few years, and a lot of factories ________.
—What about going for a walk? —______.
______ with routine office tasks, she had no time to look after her children.
The audience ______ to see who would win the gold medal.