She pretended ________ me when I passed by.

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A．not to see

B．not seeing

C．to not see

D．having not seen

Excuse me. Read the text louder, please. I ________ hear you.

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Henry ________ be at home because he phoned me from the farm just now.

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Last night a prisoner escaped ________ the prison.

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--- Listen! What's happening?

--- Oh, it might be a girl ________ in the next door.

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I saw them ________ volleyball this time yesterday.

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Have you ever seen ________ UFO?

[　　]

I think it must be a dog, but he thinks it ________ be a dog.

[　　]

They don't find ________.

[　　]

What will happen ________ people if they don't protect the environment?

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