useful work they are doing!A.What B.what a C.How a D.howHis parents teachers.Aboth are B.are allc.all are D.are both

英语谜语:they are useful useful work they are doing!A.What B.what a C.How a D.howHis parents teachers.Aboth are B.are allc.all are D.are both they are very useful and h （what） are they useful （for）? 改病句 They are collect useful things they are the---(work)----(wife) hens are really useful to people because they can I______eggs. please take of your books .they are useful to you -----useful work they have done!a what b how c what a d what an they stay for a much longer time than they are useful. 同义句 They are hurrying to work.They are _____ to work ______ ______ ______.They are hurrying to work.They are _____ to work ______ ______ ______. They are doing some very important ( ) (work) They are at work 的同义句 __________ __________ uesful work they are doing! They are at work.同意句 Look!They are all car____(work). They can look and see.They can blink and cry.They are useful for you and me.They are____ They can look see .They can blink and cry.They are useful for you and me.They are____