Did you see them-----basketball this morning?划线处填play还是playing?
问题描述：
Did you see them-----basketball this morning?划线处填play还是playing?
说明原因！
答
填Play（表示打篮球这件事）更符合语境.因为时间是泛泛的this morning.如果这里有确切的某个时间（段的话）,就得用playing（表示那时正在打篮球）了.