王海波文本19章38题

totototo

Most authorities consider(both)  dreaming( while) sleep and daydreaming (to be)forms (of  fantasy).                           choose  (while)  ,why?

盈盈绿茶

i think while ( conj.) should be replaced by during( prep.)  because sleep is n.

tedayuan

i think if "while" is  right, you should get the " sleeping " to replace the "sleep"

thus,"while" is wrong

littlebear91

"dreaming( while) sleep"  this doesn't make sense, either sleep change to sleeping or change while. So " While " is definitely wrong