2. 外语
  3. Coal is classified as a fossil fuel because______ is made from compressed plant fossils.

Coal is classified as a fossil fuel because______ is made from compressed plant fossils.

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问题 Coal is classified as a fossil fuel because______ is made from compressed plant fossils.
选项 A、it
B、of its
C、is coal
D、coal it
答案A
解析 The pronoun it is the subject of the second clause.
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托福（TOEFL）

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