More and more people like to talk with their friends ______ sending messages on WECHAT(微信)
---Who is the boy over there? Is it John? --- No, it ______ be him. John is much taller.
---Please say “ I’m here ”when your name _____ ,will you ? --- Yes, Mr Hu.
----How do you usually go to work? ---I often go to work __________. Walking is good for our health.
--- Do you know the man on TV ? --- Yes, _______name is Bin Laden. He died last month.
--- I’d like something to read . --- OK .Here are some ________.