- Would you like to share your opinion with us? 
- Ok. Mary is studying harder than before, ____ everyone can see.
| A． | because | B． | which | C． | that | D． | as |
相关试题
(绰号).Can you see that building ______ by trees? That’s ______ we study.
| A．surrounded; which | B．surrounding; where |
| C．to be surrounded; in which | D．surrounded; where |
Sir, you ________ take this seat. It’s just for the old.
| A．oughtn’t to | B．can’t | C．won’t | D．needn’t |
______ life began on earth is one of the biggest puzzles that scientist found hard ______.
| A．How; solving | B．When; to be solved |
| C．How; to solve | D．Which; to solve |
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