【题目】用所给单词的正确形式填空。
1. Mr Smith ________ (go) to Suzhou two years ago.
2. Jack ________ (learn) English now.
3. Did she ________ (buy) that book yesterday?
4. There are lots of ________ (bus) on the street.
5. Thank you for ________ (talk) to me.
【答案】1. went 2. is learning 3. buy 4. buses 5. talking
【解析】
略
