10. — How old are you, madam?— If you _______ know, I’m twice my son’s age.
The other day he ______ a dollar bill in the suit he was sending to the cleaner’s.
The company was named Gates Hall ______ a man named James Gates.
My new pen __________.Who __________ have taken it?
She has been looking forward ___________ to Shanghai for a long time.
I’m going to have my bad tooth ________ out tomorrow.