i usually walk to the supermarket but ()when it rains ,Itake the bussometimes alwayshardly ever never请说明理由
问题描述：
i usually walk to the supermarket but ()when it rains ,Itake the bus
sometimes
always
hardly ever
never
请说明理由
答
sometimes
中间有个but，表示转折，而前面用的是usually，那后面相对的就是用sometimes了
答
sometimes表示有时
根据句意,我通常走路去超市,但是（）下雨时,我坐巴士.可以知道应该是填有时.