摘要： B 用现在完成时表示影响或结果.即现在笔不见了.是由于某人已经把它拿走了的结果.
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用现在进行时完成下列句子。
1. What _____ you _____ (do)?
2. I _____ (sing) an English song.
3. What _____ he _____ (mend)?
4. He _____ (mend) a car.
5. _____ you _____ (fly)a kite? Yes, _____.
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2. I _____ (sing) an English song.
3. What _____ he _____ (mend)?
4. He _____ (mend) a car.
5. _____ you _____ (fly)a kite? Yes, _____.
用括号内动词的正确形式填空(现在完成时和一般过去时)
They’re still building the new road．They ________(not finish)it．