5.D

6.B

7.C

8.D

III.

1.D

2.C

3.C

4.C

IV.

1.It's very important to keep the environment clean.

2.I haven't spoken to her for 3 years.

3.She told me not to forget to send my parents her regards.

4.Trung has been given a microcomputer on his birthday from his parents.

THE END.

5.D

6.B

7.C

8.D

III

1.D.TO PLAY-PLAYING

2.C.USED TO SINGING-USED TO SING

3.C.FOR-BY

4.C.TO NOT-NOT

IV

1.It's very important to keep the enviroment clean.

2.I haven' t spoken to her for 3 years.

3.She told me not to forget to send my parentsmy regards.

4.Trung was given a microcomputer by his parents on his birthday.