— May I go to the concert with you?— I’m afraid not ______ you have a ticket, because I have only one.

  --  _______exciting news! --Yes, the 12-year-old boy in Beiingwas saved after the successful heart transplant.

I won’t pass the exam ______I work hard.

--I hear Jack Chan will come to Laiwu next week. --Really? _______ he comes, my younger sister will be very happy,

I can see a pen ______some pencils on the desk.