--- Another cup of coffee?
---No. thanks. I _____ be off. Marry is waiting for me.
A. can B. may C. must D. might
--- What's your brother?
---He _______ a teacher, but now he is a doctor.
A. used to be B. was used to
C. use to be D. is used to be
--- How long have you ________ Hong Kong?
--- For two weeks.
A. been to B. gone to C. been in D. arrived in
Jack ____ to help our Chinese teacher carry books yesterday morning.
A. tells B. told C. is told D. was told
---Do you mind if I open the door ?
--- ____________.
A. No, of course not B. Never mind
C. Yes, please D. No, you can't open it.
This kind of CD-ROM is very popular. Why not buy one before it________ ?
A. comes out B. is come out
C. sells out D. is sold out
