How many students are born _________the star sign of Aquarius in your class?
--- Excuse me , could you tell me ___________? ---Yesterday.
---Anny, don’t forget to_ _____the lights when you leave a room. ---OK. Mum.
---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.