—I missed the chance to take part in the concert of Jay Chou — . A. Never mind ! B. What a pity! C. What a surprised!
We should throw the rubbish into the dustbin ______ protect our environment.
Be careful when you take exams. Check your paper to ________ there are no mistakes before you hand it in.
— Can we ask Jeff for help with our English? — You’d better not. He is the last person _______ others.
— Could you tell me_____ ? — About half an hour.
John _______ at his uncle’s for 3 days and he is now at home.