The river became dirty last year.The river has became dirty for ___ ___.

The river became dirty last year.The river has became dirty for ___ ___. the River the~river~ the river 说明原因 It is recorded that in 1892 the weather became so cold that the river __over.A.freezesB.was freezingC.has frozenD.froze 18.IT IS RECORDED THAT IN 1892 THE WEATHER BECAME SO COLD THAT THE RIVER __OVER.A:FREEZESB:WAS FREEZING C:HAS FROZEN D:FROZE It is recorded that in 1982 the weather became so cold that the river froze over.这里为什么用froze?不用has frozen或was freezing? the River of the the river huangpu 还是the huangpu river? The river runs across the big river The Changjiang River is a f_______ river the River Thames还是River Thames The final 的中文歌词Dir En Grey的歌 cross the river造句 the river cam THE RIVER WIFE怎么样 on the river THE RIVER SIDE怎么样