There a fire drill yesterday这句错在哪?

there were a fire drill yesterday,那里有错,为什么? There a fire drill yesterday这句错在哪? 改错There is a fire drill tomorrow afternoon. There were a fire drill yesterday.请问哪里有错误怎么改 < >there are a fire drill yesterday 找出下列错误的并改正 改错;1.Is Meimei good at swim?2.There is a fire drill tomorrow afternoon. There is going to be a fire drill next week.语法有错误么. A fire drill 的英文作文 fire-drill是什么意思 fire drill的近义词 英语作文：fire drill A fire drill is,to put it mildly,an inconvenient exercise at the best of times. write a memorandum to all staff regarding the arrangement of a fire drill.这也是一试题.怎么回答啊? You can see ___people having a fire-drill.A:hundred ofB:five hundredsC:five hundred ofD:hundreds of 改错：每句只有一处错误,画出并改正1.There were a fire drill yesterday2.We must walk quick down the stairs 3.We must be carefully.4.We must talk quiet at the library5.It is not a really fire 有很多的问题,during the ire drill和in the fire drill一样吗?是how did the early men make a fire还是how did the early men to make a fire?是what may happen if we don't careful with fire还是what may happen if we aren't careful with fire?s There is a fire.这个句子对吗 There are a fire drill yesterday.找出句子中的错误并改正We must walk quick down the stairs.They are talked about the weather because they are going to have a picnic.You mustn't eat and drink on the bus.