Complete the sentences with am/is/are or do/don't/does/doesn't .
2. Where's Kate? I .... know?
3. What's funny? Why .. you laughing?
4. What .... your sister do? -She's a dentist .
5. It ... raining. I ... want to go out in the rain.
6. Where ... you come from? 'Canada.'
7. How much .. it cost to send a latter to Canada?
8. Steve is a good tennis player, but he ... play very often.