VI.
1. I have fewer friends than my sister.
2. My sister drinks less coffee than my brother.
3. Learning English well is necessary.
4. We shouldn't get up late every day.
5. What is the width of this room?
6. Be sure that you lock the door before you leave.
VII.
1. to become
2. to stay
3. grow - aren't growing
4. do you prefer - watching - going.