51．（09日照市高三模拟考试） 一Why are you so excited,John? —Our class got the first prize in the51．（09日照市高三模拟考试）一Why are you so excited,John?—Our class got the first prize in the singing contest at last,which we _______forward to． A．have been looking B．had been looking C．looked D．had looked答案：A请问为什么不可以选B?
问题描述：
51．（09日照市高三模拟考试） 一Why are you so excited,John? —Our class got the first prize in the
51．（09日照市高三模拟考试）
一Why are you so excited,John?
—Our class got the first prize in the singing contest at last,which we _______forward to．
A．have been looking B．had been looking
C．looked D．had looked
答案：A
请问为什么不可以选B?
答