when will sally be back?where students will study in the fut

when will sally be back?where students will study in the fut there will be------（fewer,less）cars in the street in the fut There will not be enough space to _____ the earth in the fut When and where will the World Expo will be held? -Do you think humans will be able to live on Mars in the fut ① We hope that there will be ______ air pollution in the fut We b our housing estate conditions will be better in the fut -----When will they be back? When and where will the movie be shown?be后面 when and where the new hospital will be built___a mystery. sally will come back in three hours改疑问句 英语,根据汉语完成句子：Sally will be back in 30 minutes.（对划线部分提问,线划在in