Here are the sentences with the verbs in the correct tense:
- Mary is making a dress for herself at the moment. She makes all her own dresses.
- Why are you wearing sunglasses today? The sun is very strong.
- The boys are very quiet. Go and see what they are doing.
- He is telling them a funny story right now.
- She always drives her car slowly.
- Stop smoking! The room is full of smoke which comes from your pipe. Usually nobody smokes here as I can't stand it.