2. I don’t have much contact with my family,____________________ (但我有时候的确去看望母亲) .
3. The children made a lot of work for me, ____________________ (但他们也的确为我干了许多事) .
4. Our high school English teacher was a bit strict with us,____________________ (但我们确实从他那里学到了许多) .
5. I know that you didn’t expect him to be there, ____________________ (但他确实去听了讲座，见了那位教授) .
参考答案：
1 but I did play football quite often when I was in college
2 but sometimes I do go and visit my mother
3 but they did do a lot of work for me too
4 but we did learn a lot from him
5 but he did go to the lecture and meet the professor