While watching television, __________.
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A
the doorbell rang
B
the doorbell rings
C
they heard the doorbell rings
D
they heard the doorbell ring
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The examination results __ in the speech of our headmaster  delighted all of us.
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A
refer to
B
referring to
C
was referred to
D
referred to
______me, he walked up to me, smiling.
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A
To see
B
For seeing
C
On seeing
D
Because seeing