UNIT2 continuous learning-grammar同步测试
A. Correct the following sentences.
1. All these years they are contributing articles to our magazine.
2. I have been drinking five cups of coffee this afternoon.
3. What have you been doing before you left
4. It's a good job. Have you done it all by yourself?
5. It's a long time since you come to see me.
6.
7. I'm glad to tell you that you passed the exam.
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