Difficult as the question was, David ____ to find an answer．
| A．failed | B．succeeded | C．forced | D．managed |
—I still remember my wonderful stay there ________ I worked in the distant mountain village.
—But everything is changing so fast, the persons there aren’t the ones ______they used to be.
| A．when; that | B．where; whom | C．during which; who | D．which; what |
He went out to play football, leaving his homework _________.
| A．to unfinish | B．to be unfinished | C．unfinishing | D．unfinished |
All her time __________ experiments, so she has no time for films.
| A．devoted to do | B．devoted to doing | C．is devoting to doing | D．is devoted to doing |
You must have missed the first train yesterday, ________ you?
| A．weren’t | B．didn’t | C．mustn’t | D．haven’t |
Professor White, along with his wife and children, ________ London for Paris tomorrow.
| A．are leaving | B．is leaving | C．has left | D．have left |