单项选择题

While watching television, （）.

A. the doorbell rang
B. the doorbell rings
C. we heard the doorbell ring
D. we heard the doorbell rings

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Just take it easy and （） us exactly what has happened.

A. say
B. speak
C. tell
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Professor Wilson keeps telling his students that the future （） to the well-educated.

A. is belonged
B. is belonging
C. belongs
D. will be belonged
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