I ________ finish my assignment by tomorrow., am required to, am allowed, could have, When working on group projects, I ________ prefer to work alone., am allowed to, would sooner, have got, Last week, I ________ prepared more thoroughly for my presentation., must have, can't have, should have, I ________ work from home whenever I feel under the weather., can't, have got to, am allowed to, When I was in school, I ________ done better if I had studied more., could have, might not, shouldn't have, You ________ have seen me at the event yesterday, I was not there., must, might not, can't

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