单项选择 较易0.85 引用1 组卷239
The students of Class Two ________ a science experiment in the lab right now.
A.do | B.did | C.are doing | D.have done |
2024·北京东城·一模
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—Tony, I called you last night, but there was no answer. What were you doing?
—I ________ in the garden.
—I ________ in the garden.
A.will work | B.am working | C.was working |
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