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    首页/CEFR/B2/Vocabulary/UK/must ·modal verb/must ·modal verb (LIKELY)

他开了一整天的车,所以一定累坏了。

He's been driving all day, so he ___must be exhausted.

食物都没了;他们一定把什么都吃光了。

There's no food left; they ___must have eaten everything.

那件事发生时,我大概七岁左右。

I ___must have been about seven years old when that happened.

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