It is sunday___we often go fishing为什么选in which而不选that

It is sunday___we often go fishing为什么选in which而不选that it is sunday ___ we often go fishing If it doesn't rain tomorrow,I will go fishing.为什么要用doesn't而不 It may rain hard tomorrow,in which case I won’t go fishing.这 there is a possibility that it will rain.中为什么用that而不用which 和 the city which she lives in is far away 为什么which不能用that? he often go fishing 为什么不能用it is sure that,而可以it is certain that 英语解释为什么用in which that 不填 which it is the third time ____late this week为什么不选that you are而选wh It was in this house ______ he was born.为什么用that不能用which you fishing often in do go summer连词成句