4)
1. Kate and Sue didn`t go to the park;
2. Did we play badminton yesterday?;
3. They drank apple juice in the morning;
4. When did she help her sister?;
5. They watched TV on Sunday.
5)
1. c (came);
2. b (goes);
3. a (write);
4. a (have);
5. c (will play).