6. Don't talk during the lesson.

7. Don't feed the animal in the zoo.

8, Read the instructions.

9. Don't be late for school.

10. Switch off your mobiles

$\color{lightblue}{\text{Choose the best answer}}$

1. A

2, C

3. A

4. D

5. C

6. D

7. A

8. B

$\color{darkblue}{\text{ĐỀ SỐ 5}}$

$\color{lightblue}{\text{Put the verbs in the brackets in Present Perfect tense}}$

1. have lived

2. have worked

3. has read

4. have known .

5. have not seen

6. have not worked

7. has not done.

1. doesn't talk

2.don't feed

3, read

4,don't be

1 C                          5C

2C                            6D

3A                              7D

4D                           8B

1 have lived                                     5 haven't seen

2 has woked                                     6 haven't worked

3 has read                                         7 hasn't done

4 have known