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1.the school we went to when were  small........ a lot since we left ten years old
A  had changed       B has changed      C changed       D changes
2. our family are staying in a hotel room...the sea
A overlooked        B overlooks       C where overlooks       D overlooking
3.for many years we have been using ........,which is produced by using the fall of water to make electricity
A.tidal power         B solar power     C. hydro power               D.nuclear power