单项选择 适中0.65 引用4 组卷428
Doctors and nurses ________ hard every day to fight against the illness.
| A．works | B．working | C．work | D．have worked |
2021·北京昌平·二模
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—Mary, may I use your ipad for an hour?
—Sorry. I ________ on it.
—Sorry. I ________ on it.
| A．work | B．am working | C．have worked | D．worked |
— Could I use your computer?
— Sorry, I'm going to ________ it now.
— Sorry, I'm going to ________ it now.
| A．work on | B．work out | C．at work | D．work |
— I decide ___________ hard on my English.
—You need to speak as much as possible.
—You need to speak as much as possible.
| A．working | B．worked | C．to work | D．work |
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