2. 外语
  3. After her time in hospital, Jenny’s parents are afraid she has ______ in her lessons.

After her time in hospital, Jenny’s parents are afraid she has ______ in her lessons.

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问题 After her time in hospital, Jenny’s parents are afraid she has ______ in her lessons.
选项 A、fallen behind
B、fallen down
C、fallen back
D、fallen off
答案A
解析 fall behind“落后”；fall down“掉下”；fall off“脱落”。
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