Use a suitable present or past modal auxiliary: 11. i can’t find the house. i ………………………………………….. (write) down the address. 12. she is very sleepy. she ……………………………………. (stay) up very late last night. 13. i ………………… go for a walk later. it depends on the weather. 14. the ground is covered with snow. it ………………………………………… (snow) last night. 15. she …………………………………… (be) in a great hurry to leave for the theater because she left all the dinner dishes on the table. 16. that store has just gone bankrupt. i believe they ………………………………… (have) a stricter policy about giving people credit. 17. i’m afraid mr. smith is deaf. he ……………………………………… (not / hear) what you say.

11. I can’t find the house. I should have written down the address.
12. She is very sleepy. She shouldn't have stayed up very late last night.
13. I may go for a walk later. It depends on the weather.
14. The ground is covered with snow. It must have been snowing last night.
15. She must have been in a great hurry to leave for the theater because she left all the dinner dishes on the table.
16. That store has just gone bankrupt. I believe they should have had a
stricter policy about giving people credit.
17. I’m afraid Mr. Smith is deaf. He must be unable to hear what you say.