你好:
1 He got 90 points because of his cheating in the math exam.
2 He often cheat in his exams.
3 The plane has been put off because of the heavy rain
The plane has been put off for an hour because of the heavy rain.
4 How long has the plane been put off?
5 How do you plant to spend your three-day-vacation?
6 I want to spend the three-day-holiday at home and have a good rest.
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