Please excuse me _______ your letter by mistake.
Visitors ______ not to touch the exhibits.
I _____ Ping –pong quite well, but I haven’t had time to play since the new year.
Selecting a mobile phone for personal use is no easy task because technology ____ so rapidly.
The mayor of Beijing says that all construction work for the Beijing Olympics _____ by 2006.
Now that she is out of a job, Lucy _____ going back to school, but she hasn’t decided yet.