Ответ:

1. I must do more exercise

2. She can't sing well

3. I'm going to ski

4. She will do it next week

5. We couldn't park there

6. Won't be happy if he won't come to her party.

Объяснение:

Ответ:

1. I had to do more exercise
2. she could sing quite well
3. am going skiing
4. she would do that the following week
5. they can't park here
6. wouldn't be happy, if I didn't come to her party