Mary didn’t go to John’s birthday party because she ________.A. wasn’t invited B. didn’t invite C. isn’t invited
— ______ do you like the song “trouble is friend”? — Wonderful. It’s worth ________.
If you don’t work _______ enough, I don’t think your dream will come _______.
--- _______ will the fog and haze(雾霾) last? ---I have no idea. There is no sign of an end.
Many old people _________ his age die _________ cancer.
Look, the old man who is playingguitar is university teacher.