Cardiac muscle is found only in the heart, where______that organ’s thick walls.A

游客2024-01-02 4

问题 Cardiac muscle is found only in the heart, where______that organ’s thick walls.

选项 A、it forms
B、forms
C、forming
D、formation of

答案 A

解析 The subordinate clause beginning with where needs a subject and a verb: it forms.

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