He ___ be at home. The lights are on.
She ___ be a doctor. She knows a lot about medicine.
They ___ be on vacation. Their house is completely dark.
You ___ be tired after working all night.
This ___ be John’s car. He drives a red one.
He ___ be the thief. He was in another country at the time.
He ___ be hungry. He just ate a huge meal.
She ___ be a musician. I saw her performing at a concert.
They ___ have left already. Their bags are still here.
This book ___ belong to Susan. Her name is on the cover.
You ___ be joking! That’s impossible.
They ___ be lost. They have been driving around for hours.
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