UNIT 3I.

1. - BT TRAC NGHIEM LOP 12 CB UNIT1 234 TEST YOURSELF A CO DA
BT TRAC NGHIEM LOP 12 CB UNIT1 234 TEST YOURSELF A CO DA

1. B

2. A 3.C

4.B

5.B

6.A

7.B

8.D

9.C

1O. A

IV.