Complete the sentences with the correct comparative form of the adjectives in the box

Complete the sentences with the correct comparative form of the adjectives in the box.
narrow, cold, important, dangerous, fast, expensive
1. It’s …….. in the north of Viet Nam than in the south.
2. Is a snake ……… than a dog?
3. Doing homework is ……. than playing video games.
4. The streets in my neighbourhood are …….. than in your neighbourhood.
5. My pink T shirt is……….that one.
6. Travelling by air is ………than travelling by bus.
7. Are your sister ……his?