Here are the completed sentences using "many" or "much":
I’ll try to call you tonight, but I don’t have much time. (Time is uncountable)
How many times do you brush your teeth every day? (Times are countable)
Shall I make some more tea? I didn’t make much. (Tea is uncountable)
Kate only ate a sandwich because she didn’t have much money. (Money is uncountable)
There weren’t many seats. Some of us had to stand up. (Seats are countable)
Have you got much work, or do you want to come to the cinema? (Work is generally uncountable)
We invited lots of people to our party, but not many turned up. (People are countable)
You’ll have to share, because there aren’t many books. (Books are countable)
I haven’t got much homework today. (Homework is generally uncountable)
Are there many apples on the tree? (Apples are countable)