—Not only the young but also the old are getting interested _____ WeChat (微信).—They can communicate more freely.
There is a map_______ China _______ the wall.
It’s important ________ healthy food.
--_____ do you spell your name? --T-O-M, Tom.
My English name is Tony Smith. So my last name is ______.
Tony and Sam ______ my friends. Their mother _______ our English teacher.