________you never plan to visit the polar bears in the North Pole or the penguins in the South Pole，now it is the proper time to start thinking about that.
| A．Until | B．Unless | C．As long as | D．Even if |
Advertisements based on these facts _________ in newspapers and
magazines but they have not helped much.
| A．had printed | B．have been printed |
| C．was printed | D．Prints |
—The man was absorbed in watching TV and he didn't attend the wedding.
— _________，as far as I know.
| A．So was his wife | B．So his wife was |
| C．It was so his wife | D．It is the same with his wife |
—What do you think of _________ basketball match between our school and your school?
—The result was really _________ surprise to me. We were beaten.
| A．an; / | B．the; / |
| C．the; a | D．an; a |
__________ in the restaurant for half an hour, I suddenly realized I had left my wallet at home.
| A．To wait | B．Having waited | C．Having been waited | D．To have waited |
The young man, __________ abroad for two years, decided to go back to his motherland.
| A．to work | B．working | C．having worked | D．to have worked |