John and I___friends for eight years.We first got to know each other at a Christmas party.But we_____ each other a couple of times before that.
--- Why was she unhappy yesterday ? --- A call from home ______ an attack of homesickness.
---Can you think of another good idea? ---This is the best approach I can imagine ______ the work ahead of schedule.
--- Where did you see Avatar ? --- It was in the same cinema _______ I ever watched 2012.
Song Zuying became the first Chinese singer _______ a solo concert at the Vienna Golden Hall , ______ an audience of more than 1,000.
As nobody here knows what’s wrong with the machine, we must send for an engineer to _______ the problem.