——Yesterday, I didn’t see Ben at the party.   —— You _____ him. We just came back from Beijing this morning. 

—What happened to the young trees we planted last week?—The trees ____ well, but I didn’t water them.

–I didn’t invite him to the party but he came anyway and got completely drunk. --__________he hadn’t come! The party could have been a success.

You ______be sitting in this waiting room, sir. You see, it is for women and children only.

He is a poorly learned man, but he acts as if he ______.