For x Since = Present Perfect

I've been looking .................. my keys for the last 10 minutes. Can you help me?

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I've had my computer ............... more than five years.

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Have you been sitting here ............... long?

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She hasn't been sleeping well .............. she flew back from Japan.

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It's been raining ............... over three hours. When will it ever stop?

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He hasn't used his car ............. he had the accident.

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I haven't seen her ................. ages. Is she alright?

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The house opposite us has been empty ............. the last 8 months.

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My cat has been missing .................. Saturday night.

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There have been rumors about the merger ............. last month.

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