we don't know how to do that.We don't know what makes us lau

we don't know how to do that.We don't know what makes us lau We don't know what to do. ---we don't know how to do it We don't know what to do.(改为复合句) We don"t know what we should do next （ ）We don't know ______.A.how to do B.which to do C.what to We don't know what we should do next.改为同意句.We don't know___n We don't know what we shall do.同义句we don't know_ _do 改错we really don't know what will do next I don't know what we will do next. We don't know what we can give her.改为同义句 We don't know （how we ___play chess than bridges.some of us don't know how to p