Unit1 课后巩固提升训练
一、用方框中单词的适当形式填空
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building, wait, wonder, finish, activity
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1. The workers decided ______ the task(任务) before Friday, but it seemed impossible (不可能).
2. Anyone who sings well can take part in the ______ in our school.
3. There are some new ______ on both sides of the mad.
4. _______ for the green light before you cross the street.
5. —Hi, Bruce. Here’s a letter for you.
—Thanks. I ______ who(m) that letter was from.
