_______ a winter morning, Tina fell ________ the bike onto the ground.

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This is ________ interesting movie and it is also ______ useful one.

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--Why do you think the man is running?

--He could be ________ for exercise.

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They called the police but didn't find _______.

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--Do you know the woman ________ a camera in her hand?

--Sure. She's my mum.

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This backpack must be ________ I saw her carry it yesterday.

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I'll have a test ________ writing next week.

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The guitar ________ belong to Alice. Only she plays the guitar here.

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Jack's bike is blue, so this yellow one ________ be his.

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This book ________ be Carla's. Her name is on the book.

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