一间房子长18米，宽15米，它的面积是多少平方米？用面积是9平方分米的正方形瓷砖铺地，需要多少块？

29．In no case_________go        the law of nature or we’ll meet endless suffering.

A．we can; by

B．can we; for

C．we can; round

D．can we, against