It's my first time to give a speech ____ （介词)public（当众).
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We should apply what we've learned from books ____ （介词)（把 ...... 应用于) the task.
When I （) （be) a child, I often swam in the river.
Mary （) （not be) （请调整为合适的形式)a teacher.
－－ I don't like dancing.－－ I don't like dancing, ____ （连词)（也).
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