Here are the completed sentences using "many" or "much":

1. I'll try to call you tonight, but I don't have **much** time.
2. How **many** times do you brush your teeth every day?
3. Shall I make some more tea? I didn't make **much**.
4. Kate only ate a sandwich because she didn't have **much** money.
5. There weren't **many** seats. Some of us had to stand up.
6. Have you got **much** work, or do you want to come to the cinema?
7. We invited lots of people to our party, but not **many** turned up.
8. You'll have to share, because there aren't **many** books.
9. I haven't got **much** homework today.
10. Are there **many** apples on the tree?