The first turtles ________ about 200 million years ago. A. believed to exist B. are believing to be existed C. believed to be existed D. are believed to have existed

The first turtles ________ about 200 million years ago.

A. believed to exist     
B. are believing to be existed
C. believed to be existed          
D. are believed to have existed

Trả lời

Chọn đáp án D

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