Coal is hard like a rock and yet it burns while no rocks .A. do B. does C. are D. is

问题补充：

Coal is hard, like a rock and yet it burns, while no rocks .

A. do

B. does

C. are

D. is

答案：

(答案→)A. do

B. does

C. are

D. is

解析：do替代burn。