15.  As Polly was riding on the train, she sensed that she was _____ by a tall man in a dark coat.
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A
being stared
B
being watched
C
being attached
D
glanced
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He was sent to Australia _______ when he was ten years old.
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A
to be educated
B
to educate
C
educating
D
to be educating
He risked __________ his job to see me off.
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A
Losing
B
to risk
C
being lost
D
Lost
Don’t come in unless ________.
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A
inviting
B
inviting to
C
invited to
D
being invited to