on 改at
be bad at 在某方面差1. will (use) the sun (heat) (water) in the (futre)2.(Will) we (have) (dull) (job) in the futre.3.Robots (wll) (cleaning) the (house) and cook (food).4.(Will) the students (send) their (homework) (by) email?上列四个中每个括号中哪个错了？怎么改？谢啦，我好不容易一个字一个字打出来的！！！heat 改to heat futre 改futurewill 改shallcleaning 改clean那最后一个呢？最后一个你看看 你是不是打错了