$\text {Exercise 3:}$
1. are helping
2. is staying
3. am traveling
4. are studying
5. are playing
6. is watching
7. are talking
8. is shining
9. are using
10. Is Jane watching
$\text {Exercise 4:}$
1. am not playing
2. are studying
3. don't do
4. am having
5. are riding
6. drives
7. Is/ learning
8. are studying
9. spending (cái này không phải tiếp diễn hay hiện tại đơn mà là sau like thêm -ing nhé bạn).
10. go/read
$\text {Exercise 5:}$
1. is swimming
2. enjoys
3. is knocking (someone số ít chia is)
4. are studying
5. is doing
6. aren't watching
7. reads
8. plays
9. Do/like
10. is playing
$\text {Exercise 6:}$
1. doesn't have
2. comes/is staying
3. don't drive/go
4. talking
5. Where does your new friend live, Nga?/ lives
6. Are you in class 7A/ am
7. is playing
8. don't talk
9. does/go - goes
10. Are your friends students?/ are
$\text {Exercise 7:}$
1. are (lưu ý brothers có "s") - are studying
2. plays
