помогите пожалуйста с 9 по 15 предложение надо раскрыть скобки и поставить глагол в правильную форму во времени Past и Present Simple

9 sleeps, slept

10 walk, took

11 did she buy, she didn't buy

12 did they sell, don't know

13 is, ate

14 when did you leave

15 Are they happy

9 he usually sleeps well. But last night he slept badly . 10 as a rule, I walk to the institute , but yesterday I took a bus. 11 did she buy a new dress yesterday?  No, she didn't buy it. 12 did they sell their house a week ago?  I didn't know. 13 she is ill now. She ate an ice cream yesterday.  14 when did you leave the office yesterday?  15 are they happy to see you now?