They were at work at that time.（改为否定句和一般疑问句并作肯否定回答）

they were at work at that time?作一般疑问句 The TV cought fire while they were at work yesterday是什么意思?英语高手请解答 They were at work at that time.（改为否定句和一般疑问句并作肯否定回答） they were not at work at that time 改成一般疑问句和否定句就改成疑问句，把not删掉 They are at work 的同义句 They work hard at _____(draw). They are at work.同意句 They were at the zoo at the first time 改错 They work hard at English._____ _____ they work at English!_____ _____ _____ they did at English! They were at homea moment ago.(同义句) They were at home ____ ____ . They were alone at home last Sunday.They were at home all ___ ___. 在下面空内填入一词----Where they on vacation last Sunday?----No,they were not.They ____ at work. They were all wet when they arrived at school.:Were they?Did they? The chilren were at school,my husband were at work and the house was quiet.为什么会是用were? They were swimming at that time.（改为否定句） They _____ swimming at that time. They're at working now.和They're at work now.的区别 they were good at speaking English last year they were at school last sunday ,____?(改为反义疑问句)