1. You must not give goldfish too much food.
= It is (not allowed to) give goldfish too much food.
2. I don’t know what kind of pet I should get .
= I don’t know what kind of pet (to get).
1. You must not give goldfish too much food.
= It is (not allowed to) give goldfish too much food.
2. I don’t know what kind of pet I should get .
= I don’t know what kind of pet (to get).