我有几道英语题问大家（最好写出原因,不写也可以）

我有几道英语题问大家（最好写出原因,不写也可以）
一.适当形式填空 1.( )you( )ever( )to London.(be) 2.While I( )(walk)along the street,I( )(meet)my old friend,John.3.It( )(rain)hard when I was on my way home yesterday.4.When I got there,my friends( )(sit)at the table.二.不定代词填空 1.Listen,( )is singing in that room.2.I have looked for my pen( ).But I couldn't find it( ) 3.All people will die,( )can live forever.4.Has( )seen my dog?5.There isn't( )to drink in the refrigerator.