When he _______ the door, he found his keys were nowhere.
| A．would open | B．opened | C．had opened | D．was to open |
.Although it had been______ struggle for him to finish the experiment, he enjoyed the result with________ satisfaction.
| A．the, / | B．a, / | C．a, a | D．/, a |
― Did you go to the 2010 Shanghai World Expo?
― Yes, my father took me there. It was really __________!
| A．a great fun | B．a fun | C．great fun | D．a great funny |
— What is the model plane like?
— Well, the wings of the plane are_______ its body.
| A．the twice length of | B．twice the length of |
| C．as twice long as | D．twice as longer as |
Why not try another way _______ you may do your experiment better and more quickly?
| A．/ | B．which | C．of which | D．by which |
— Can you imagine what is Jack doing now? He is playing football outside while everyone else is busy in class!
— He his homework, I think.
| A．must have finished | B．must finish | C．can’t have finished | D．mustn’t have finished |