they were delayed by heavy traffic为嘛不能用bad traffic

they were delayed by heavy traffic为嘛不能用bad traffic Why couldn't they meet us at five o'clock? Because they were delayed by heavy traffic帮忙 翻译一下 求解释 why couldn't they catch the 6:30train?Because they were delayed by()some heavy traffics,any heavy traffic,a heavy traffic,heavy traffic选哪个? They couldn't arrive because they were delayed by?A.heavy traffic B.heavy trafficsC.crowded trafffic.D.crowded traffics.选什么?为什么?根据语法规则是什么? why couldn't they meet us at five o'clock? Because they were delayed by ___A.a heavy traffic B.heavy traffic C.some heavy traffic D.traffic being heavy答案是B 不知道为什么 Why were you late for class this morning?I was delayed by()heavy traffic的什么形式? They were ___________(welcome) by the history. 高三英语语法题Why couldn't they catch the early train?They were delayed by______答案是heavy traffic为什么不是a heavy traffic Why were you late for class this morning?I was delayed by()a heavy traffic,heavy traffic,some heavy traffic,traffic being heavy.应该选哪个? They were surprised to see that they were b_____ by the river again. 英语翻译:later they were replaced by toys children really wanted they were i______ by a knock at the door They were made(laugh)by the lovely girl适当形式 英语翻译practical value by the time they were finished. they were saved by the clever cat被动变主动 By whom were they made to stand here?翻译, THey were indroduced by an old friend ten years ago They arrived late ,so the meeting-------.a.delayed b.was delayed c.delays delaying