You ______have written such a long article. The teacher said 100 words would be enough.A. mustn’t B needn’t C couldn’t D. wouldn’t
— The weather isn’t good enough for an outing, is it? — Not in the least. We can’t have __________ at this time of the year.
Do you still remember the key points that ___________ in his report? I don’t remember them all.
When he was doing the software development project, he ___________ many problems that he had to solve on his own.
____________ scientists will be invited to take part in this space flight.
The old teacher lay wide awake on his bed, ___________ all the problems he had to deal with the next day.