помогите с 7 заданием , пожалуйста, a и b

правильный ответ b потому что другие предложения в тексте не сказанно

4a
2. We are meeting Danny at seven o'clock. 
3. I'm going to the dentist tomorrow.
4. We are having an English test on Friday.
5. Tom is watching a video with Rick this evening.
4b
- Julia is wearing a red dress today.
- I'm going to the concert on Monday.