问题
选择题
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替代burn。
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Coal is hard, like a rock and yet it burns, while no rocks ______.
A．do
B．does
C．are
D．is
答案：A
do替代burn。