It is all of us can do it.A. so easy exercise thatB. such easy an exerciseC. such easy exe

问题补充：

It is all of us can do it.

A. so easy exercise that

B. such easy an exercise

C. such easy exercise

D. so easy an exercise that

答案：

A. so easy exercise that

B. such easy an exercise

C. such easy exercise

(答案→)D. so easy an exercise that

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