15. No one knows this answer, ________?
A. does he B. doesn’t he C. do they D. don’t they
16. Despite the bad weather, he ____ get to the airport in time.
A. was able to B. couldn’t C. could D. almost
17. She had done more work in one day than her husband ____ in three days.
A. do B. may do C. could do D. was able to do
18. Customer: “Excuse me?”
Shopkeeper: “Yes, _________, sir?”
A. Can you help me B. what happens
C. help me D. Can I help you
Theo TTHN