China isvast country which is home toamazing variety of landscapes plants and animals.A.

问题补充：

China isvast country which is home toamazing variety of landscapes, plants and animals.

A. the; the

B. a; the

C. the; an

D. a; an

答案：

A. the; the

B. a; the

C. the; an

(答案→)D. a; an

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