What does Mr. Liu usually ___________when he is at school?
I often heard Tom _________ the violin in the next room.
The student didn’t find much ________ about the accident on the website.
—Who is that woman? —Liu Yang. She’s ________ astronaut. We are proud of her.
I don’t know _____ he will come tomorrow or not ,_______he comes , I’ll tell you.
--What are you doing here ? --We are _______a way to have a cheaper holiday .