2. 自考
  3. Using a modal auxiliary: It is necessary that they follow their teacher’s instruction.

Using a modal auxiliary: It is necessary that they follow their teacher’s instruction.

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问题 Using a modal auxiliary:
It is necessary that they follow their teacher’s instruction.
选项
答案They must／have to follow their teacher’s instruction．
解析 本题要求使用情态助动词，只需把It is necessary that…结构换成情态助动词must／have to，并置于动词follow前即可。
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