-- I called you last night , but you didn’t answer.-- Sorry, Grace. I________I am A Singer when the phone rang.A. am watchingB. was watchingC. have watched
---Can you understand me ? ---Sorry, I can _______ understand you .
_______ she studies hard, ________ the girl still can’t get good grades.
----_______ do you play with your old classmates? --- Not very often.
---How do you like the talk show? ---I think it’s _____, but some people think it’s so ______.
---You look sad. What happened ? ---I can’t find a way ________ the students quiet.