Помогите я вопще не понимаю англиский мама учила немецкий!

1. I wrote a letter to my sister. 2. He did not repair his bike last Saturday. 3. It will be cloudy and windy tomorrow.  4. Does she cook breakfast and lunch? 5. Where did they skate? 6. Why were the children happy? 

5)Were did they skate? 6)Wny were the children happy? Я ток два сделала,дальше сма)