题目内容

I've_______ playing this game for hours now.

A. being
B. been

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My dad_______ been feeling well for a few days.

A. hasn't
B. haven't

They've_______ studying since 10 o'clock.

A. been
B. being

We_______ been living here for very long.

A. haven't
B. hasn't

The dog's been_______ for half an hour.

A. barked
B. barking