单项选择 适中0.65 引用1 组卷304
They ________ the problem since this morning, but haven’t reached an agreement.
| A．discussed | B．discuss |
| C．have been discussing | D．were discussing |
22-23高二上·天津·阶段练习
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While the idea behind this experiment _________ in our group, it was suggested to us by our teacher that we try something similar.
| A．discussed | B．was being discussed | C．had discussed | D．had been discussed |
The matter ______at the meeting yesterday was of great significance.
| A．to be discussed | B．being discussed |
| C．discussed | D．be discussed |
One solution to this problem now is sustainable development.
| A．discussed | B．discussing |
| C．to be discussed | D．being discussed |
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