Rewrite these sentences in the past simple or present perfect tense
1. We ( study ) a very hard lesson yesterday
2. We ( study ) almost every lesson in this book so far
3. We ( study , never ) that television program
4. He ( watch ) an interesting progam
5. My wife and I ( travel ) by air many times in the past
6. My wife and I ( travel ) to Mexico by air lart summer
7. I ( read ) that novel again during my last summer
8. I ( read ) that noel by Hemingway sevaral times before
9. I ( have ) a little trouble with my car last week
10.However , I ( have ) no trouble with my car since then