Mr. White came to our school in 2008, and since then he ______ us English.
—_____ did Mr Li finish the work last night? —At about eleven, I think.
--_____ you call back tomorrow? --Of course I can.
Our teacher often tells us ____ the windows before we leave.
There ____ some meat in the fridge, so you don’t need to buy any.
Tony wanted to take some good photos,______ he lost his camera.