Is that guy American? - No, he can't be American. He doesn't speak English., Is Tom coming? - He has a math test, so he might not have time., He has a big house and a fast car. - He must have a lot of money., She doesn't say very much. - I think she may be a bit shy., Where's Tom? He isn't answering his phone. - He was on the bus this morning, so he can't be ill., They have Australian accents. - They must come from Australia.,

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