His trousers blue, mine black.
昨天你做过什么? A. What did you do yesterday?B. Where did you do yesterday?C. What did you do last weekend?
上周末你去过哪里? A. What did you do yesterday?B. Where did you do last weekend?C. How did you go last weekend?
I (吃过)good food.A. ate B. eats C. eated
Did you go swimming? A.No, I don’t. B. Yes, I do. C. No, I didn’t.
Did you read books? A. Yes, I do. B. Yes, I did. C. Yes, he does.