_______to improve the students’sight, the eye exercises are done in schools nationwide.
| A．Being designed | B．To design | C．Designing | D．Designed |
相关试题
Sir, you ______ be sitting in this waiting room. It is for women and children only.
| A．oughtn’t to | B．can’t | C．won’t | D．needn’t |
He hurt his leg climbing the mountain; otherwise, he _____ the meeting.
| A．will attend | B．had attended | C．would have attended | D．would attend |
— Turn off the TV, Jack. ____ your homework now?— Mum, just ten more minutes, please.
| A．Should you be doing | B．Shouldn’t you be doing |
C．Couldn’t you be doing | D．Will you be doing |
The thief ________ in from the kitchen window as the door was closed.
| A．may climb | B．must have climbed |
C．could have climbed | D．should have climbed |
John, look at the time. ______ you play the piano at such a late hour ?相关知识点
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