单项选择题

After her time in hospital, Jenny's parents are afraid she has （） in her lessons.

A. fallen behind
B. fallen down
C. fallen back
D. fallen off

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The car manufacturer has （） 1,000 workers because of the drop in sales.

A. picked out
B. gave up
C. dealt with
D. laid off
单项选择题
The meeting was put off （） the chairman's illness.

A. because of
B. in the front of
C. in the interests of
D. in face of
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