2. 外语
  3. John did not have to write the composition if he didn’t want to. It was ______.

John did not have to write the composition if he didn’t want to. It was ______.

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问题 John did not have to write the composition if he didn’t want to. It was ______.
选项 A、imperative
B、optional
C、critical
D、unnecessary
答案B
解析 optional a.可作选择的，非强制的。imperative a．必要的，极重要的；命令式的，必须做的。critical a.决定性的，关键性的，危急的；批评的，批判的。unnecessary a.不必要的。
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