Only when ______ in 1918, ______ happily back to work.
| A．the war was over … he went | B．was the war over … did he go |
| C．the war was over … did he go | D．was the war over … he went |
________ in the warm sunlight, I soon fell asleep on the sunny beach.
| A．Bathe | B．To bathe | C．Bathed | D．Bathing |
Everyone present at the meeting agreed to stick to the ________that everyone should be treated fairly.
| A．purpose | B．ambition | C．principle | D．level |
Using _____ illegal drugs can lead to health problems, and it can be _____ stain on one’s life.
| A．不填；the | B．the; the | C．the; a | D．不填； a |
—Sorry indeed, I ________ to your birthday party if …
—Forget it. I know you were out on business.
| A．must come | B．would come | C．must have come | D．would have come |
—Another cup of coffee? That’s your third since lunch.
—Yeah, well, I ____ all night preparing for my history exam. I can hardly keep my eyes open.
| A．stayed up | B．have stayed up | C．have been staying up | D．will stay up |