— Is there anything wrong. Bob? You look sad.—Oh, nothing much. In fact, I ______ of my friends back home.
---Where did you get to know her? ----It was on the farm______ we worked.
I feel uncomfortable each time I remember the situation _____ Mary didn’t agree with me _____ the matter.
I want to buy that kind of cloth because I ________ the cloth_______ well.
______ the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
To keep healthy, Professor Johnson ______ cycling as a regular form of exercise after he retired.