You are still here? I ____ you _____ Beijing. A think, are leaving for B think, have already left for C thought, would soon leave for D thought, had already left for
During the days ________, he worked as a servant at the Browns.
The number of the people who _______ cars _______ increasing.
I shall never forget those years _______ I lived on the farm with the farmers, _______ has a great effect on my life.
--- Did you ask the guard _______ happened? --- Yes, he told me all _______ he knew.
Smoking, _______ is a bad habit, is, however, popular.