UNIT 1I. COMPLETE THE SENTENCES...

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. yesterday 2. until

3. since

4. when

5. while

6. ago

7.

before8. than

VI.