单项选择 适中0.65 引用2 组卷772
—Who do you think will get the first prize?
—Mary, of course. She ________ for the competition for months.
—Mary, of course. She ________ for the competition for months.
| A．is preparing | B．was preparing |
| C．had been preparing | D．has been preparing |
12-13高二下·四川成都·阶段练习
类题推荐
—Where is Mr. Zhang?
—Er..., he headed for the library just now, and________ books there.
—Er..., he headed for the library just now, and________ books there.
| A．had been reading | B．read | C．had read | D．has been reading |
Tom ____on the essay for two hours but he _____only a hundred words by now.
| A．has been working;has written | B．has been working;writes |
| C．worked ;written | D．worded;writes |
Over the past decades, sea ice ________ in the Arctic as a result of global warming.
| A．had decreased | B．decreased |
| C．has been decreasing | D．is decreasing |
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