chia các động từ trong ngoặc ra thì quá khứ hoặc thì hoàn thành
1.We (study)....... a very hard lesson the day before yesterday.
2. We (study) ......almost every lesson in this book so far.
3.We (watch).......that television program.
4.We (watch)......an interesting program on television last night.
5.My wife and I (travel)...............to Mexico by air many time .
6.My wife and I (travel ).............to Mexico by air last summer.
7. I (read) .........that novel by Hemingway sevaral times before.
1. We studied a very hard lesson the day before yesterday.
2. We have studied almost every lesson in this book so far.
3. We have never watched that television program.
4. We watched an interesting program on television last night.
5. My wife and I traveled to Mexico by air many time .
6. My wife and I traveled to Mexico by air last summer.
7. I have read that novel by Hemingway several times before.