1.Eating good food and playing sports_______(is)useful 2.Here___(be)some money
3.Why did you keep him_____(work)all day and all night?
4.The____(many) books you read ,the____(good)your study is.
5.I am used to ___(live)in Xi'an
6.My grandpa used to ____(live)in the countryside.
7.We'll have a___ holiday.What about going to Hanzhong
A.two days B.two-day C.two-days D.two-days'