—Why can your neighbor know so much about London?—He ____ have been there before.
Don't worry if you don't understand everything, the teacher willthe main points at the end.
It is obvious to the studentsthey should get well prepared for their future.
---- Sorry, I have to ______ now. It’s time for class. ---- OK, I’ll call back later.
A persone-mail account is full won't be able to send or receive any e-mails.
______ the project in time, the staff were working at weekends.