— Did you return the book to me? Why can’t I find it anywhere? — ________. You were writing a letter at your desk at that time.
How did you manage ___________ their approval?
She desired to marry _____ a rich man.
The medicine _______ bitter.
They are also worried _________ all the students are able to make good use of the spare time after school.
A wonderful sports meeting ________on our school playground last Friday and Saturday.