问题描述：
,英语好的一起进
1.He went to supermarket alone ,(同义句)
He went to supermaket _____ _____.
2.( )There_____ great changes in our hometown in the past twenty years.
A.are B.were C.has been D.have been
3.已知甲乙两人同时从同一地点出发,甲的速度为7,乙的速度为3,乙一直向东走,甲先向南走10步后又斜向北偏东方向走了一段后与乙相遇,那么相遇时,甲乙各走了多远?（用一元二次方程解+勾股定理,）,
1.He went to supermarket alone ,(同义句)
He went to supermaket _____ _____.
2.( )There_____ great changes in our hometown in the past twenty years.
A.are B.were C.has been D.have been
3.已知甲乙两人同时从同一地点出发,甲的速度为7,乙的速度为3,乙一直向东走,甲先向南走10步后又斜向北偏东方向走了一段后与乙相遇,那么相遇时,甲乙各走了多远?（用一元二次方程解+勾股定理,）,
问题解答：
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