what ( )you( )(do)at two o'clock?when( )it( )(begin)to rain?

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what()you()(do)attwoo''clock?when()it()(begin)torain?what()you()(do)attwoo''clock?when()it()(begin)tor

what ( )you( )(do)at two o'clock?when( )it( )(begin)to rain?
what ( )you( )(do)at two o'clock?when( )it( )(begin)to rain?

what ( )you( )(do)at two o'clock?when( )it( )(begin)to rain?
were doing 下午两天你在做什么?过去进行时
did begin 雨是什么时候开始下的?一般过去时

were doing
did begin
在强调一个时间点时,应该用进行时态。

did do
did begin

will do will begin? 或者 did do ,will begin