When the class was over,everyone made ___ the dining-room.A.atB.forC.toD.in

I_____(understand) the question when the class was over. It was eight o'clock when I ___ the station. When the class was over,everyone made ___ the dining-room.A.atB.forC.toD.in while he yan was at the doctor's,I was going to the class这里为什么不用WHEN class one___all out when the door openeda:are b:is c:has d:was Tom ____（happen）to meet his class teacher when he was walking in the street. when dose the class begin? The first class was English. ______Sarah was at the barber's,I was going to class.答案是while,为什么when不可以 when the boy was 人工翻译：It was hard for me to understand the teacher when she talked to the class. When does the class b______in the morning? 2.The engineer worked in the faxtory when it was 10 o'clock.The engineer ______in the2.The engineer worked in the faxtory when it was 10 o'clock.The engineer ______in the faxtory ______10 o'clock. When the class was over,every one made ___the dining room.选项:a、by b、alone c、for d、from When the class was over,every one made ___the dining room.选项:a、by b、alone c、for d、from everyone except eric and mary _______there when the class began 1.are 2.is 3.were 4.was Our class____a class meeting ____someone knocked at the door.A was having:while B were having:when I was the tallest girl in my class when i studied at Class Two Grade Six这句话的意思是什么,有语病吗