—Why are your eyes so red? You _______ have slept well last night.
—Yeah, I stayed up late writing a report.
| A．can’t | B．mustn’t | C．needn’t | D．won’t |
He seemed to be looking for the words ____ he could express his idea.
| A．for which | B．with which | C．in whom | D．in that |
A modern city has been set up in ____ was a wasteland ten years ago.
| A．what | B．which | C．that | D．where |
To make members of a team perform better, the trainer first of all has to know their ____ and weaknesses.
| A．strengths | B．benefits | C．techniques | D．values |
In the new century, we still should _____ primary importance to the development of economy.
| A．perform | B．attack | C．seek | D．attach |
I remember _____ this used to be a quiet village.
| A．when | B．how | C．where | D．what |