【許芝瑜】評論
were watching 屬於過去進行式，
【nomi】評論
They were watching the basketball game on TV at that time.當時他們正在電視上看籃球比賽。(A) yesterday 昨天(B) last month 上個月(C) at that time 當時(D) for two hours 兩個小時at that time片語1.在那時；當時Jackson called at the office this afternoon, but I could not see him, as I was engaged at that time.傑杰克遜今天下午曾到辦公室來過, 但當時我正忙著, 沒能見他。You were differently dressed at that time .當時你的服裝同現在不一樣。