Answer:
1. Susan usually goes to school by bus, but now she goes to school by train.
2. Mary often reads in bed, but today she is very tired and she didn't read.
3. The boys usually ride their bikes to school. They like riding their bikes. They are very naughty boys. They always get to school late. Today their teacher got very angry, because they were late again.
4. Mary likes eating sweets. Every morning she has coffee with a lot of sweets and chocolate. For lunch she and her friends often eat sweets or ice-cream. She doesn't like fruit or vegetables. She never eats eggs or cheese. Today she is sick. She is sleeping in her room now.