--Who is making much noise? ---It ____ be Timmy. He is sleeping now.
Two _______ students join us in the English Corner every Friday.
---Do you know girl over there?---Yes. She is exchange student from America.
单词辨音
--It’s so hot here. Do you mind ____________ the window?---____________. I will do it right now.
My computer broke down, but I am not clear ___________________.