Can and could

1. In my first year as a teacher, I almost lost my self-confidence because I teach anything.

2. Mary tried hard to persuade her friend but she change her mind.

3. Bijan says he can speak four languages but he talk to customers yesterday as he was a bit nervous.

4. Adan and her mother open the door because it was locked.

5. I finally talk to John after I tried to reach him on the phone for hours.

6. I can never memorize all of the rules in the past, and I do it now either.

7. Mike was the only one who could understand me, but now he either.

8. Before the nuclear disaster in the 1980’s, people grow everything in their gardens.

9. No matter how hard I try, I can’t see the difference in the two pictures Susan says she easily see.

10. We choose our opponents. The teams will be matched randomly.