11./ you/read/ the book yet? 12. How many letters / they / write / so far?
13. When / he / tell / you that?
14./you/be / at home last night?
15. How often / you/travel / abroad till now?
16. He / leave / just / his house.
17. We / build / a tree house last week.
18. Two years ago, Fiona / break / her leg.
19.1/ wash / already / the dishes.
20. The other day, our cat / bring / home a mouse.