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天天练33
感谢您能抽出几分钟时间来参加本次答题，现在我们就马上开始吧！
1. Sam___________ (do) the housework yesterday.
________(do) you _________(enjoy) yourself yesterday?
Mr. Li __________ (be) in Beijing at this moment.
There _______________ (be) a sing contest tomorrow.
You, he and I ______ from China.
