Lily couldn't sleep because A. he hadn't studied enough. ...

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Lily couldn’t sleep because

A. he hadn’t studied enough.

B. he had forgotten to charge the battery.

C. she had drunk too much coffee.

D. they had just had dinner.

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The printer didn’t work because

A. he had broken his glasses.

B. somebody had stolen it.

C. he had forgotten to charge the battery.

D. I hadn’t turned it on.