单项选择题

According to the passage, what was the percentage of American adults doing regular physical exercises two years ago（）

A．About 70%.
B．Nearly 60%.
C．Almost 50%.
D．More than 12%.

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A. trust B. hut C. fun D. computer
单项选择题
She showed him the photo she （）the day before.

A. has taken
B. took
C. was taking
D. had taken
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