Answer:
So basically you're just deciding if the sentence needs a "the" or not. Here are all of them written normally, with the added articles in italics.
1. I spend a lot of money on clothes.
2. Is that blogger from the USA or Canada?
3. I don't like websites about celebrities.
4. I'm going to the supermarket for some milk.
5. They went to prison for six years.
6. I play basketball on Fridays.
7 Mont Blanc, in the Alps, is the highest mountain in Europe.
8. The chicken that we bought yesterday is in fridge.