The last river ______ they crossed is two miles wide.为什么用 that 不能用 which

she often swims in the river用last year 改写 she _____ _____ ______the river ______ _______. The missing boys were last seen _____ near the river.为什么填playing “ing”形式? Is the boy _____ in the river? The river _____(wind)to the sea They went to the river side park and had a good time last Sunday .They went to the river side park and had a ___ ____ _____ last Sunday .同义转换,怎么写呢?看到者, 改病句the water in the river polluted last year The disty water p_____ the river last year. _____ ______ ______ last night and the river ________ two feet.昨晚下了一场大雨,河水涨了两英尺 The river became dirty last year.The river has became dirty for ___ ___. at last he s() in swimming across the river He swam across the river last year.为什么用across 英语求教,15.Is the river _____ through the town very long?A.flows B.that flows C.which flow D.the one flows 16.Is this college _____ they went to last year?A.that B.which C.the one D.the one what 17.Is this the university _____ you visited last t 英语求教,15.Is the river _____ through the town very long?A.flows B.that flows C.which flow D.the one flows 16.Is this college _____ they went to last year?A.that B.which C.the one D.the one what 17.Is this the university _____ you visited last t _____ will go on the pearl river cruise with you? They spent time _____(swim) in the river. _____（be） there any fish in the river? Yesterday,a child _____(fall) into the river,and died. Is this the river _____ I can swim?