With a modal auxiliary:
He left at about one o'clock in the afternoon. It normally takes him three hours on the way, and it is five o'clock now, so he ____ have already got home now.
With a modal auxiliary:
He left at about one o'clock in the afternoon. It normally takes him three hours on the way, and it is five o'clock now, so he ____ have already got home now.
【正确答案】:must
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