1.he has been eating for tow hours
He has been eating_since_ _two_ _hours_ _ago_(四空）.2.i like Chinese tea without anything in it
i like Chinese tea_with_ _nothing_ _in_ _it_(四空）
3.my best friend has been watching sports for three and a half years.
my best friend has been watching sports for_three_ _years_and_a_ _half_
4.would you like another cake?
would you like_one_ _more_cake?
5.i find it very hard to travel around the big city.
i find it_is_very hard to travel around the big city.
6.i prefer Enlish to Chinese.
i_like_ Enlish _more_ _than_Chinese.