The story ____________ scary, but it is true.
Peter ________ to help our math teacher carry books yesterday.
——What’s your mother?——She_________ a teacher, but now she is a doctor.
——How long has his father ________London?——For two weeks.
This kind of CD-ROM is very popular. Why not buy one before it___________?A. comes out B is come out C. is sold out D. sells out
——Do you mind if I open the door?——___________.