_____ makes this shop different is that it offers more personal service.
--Who is the old man talking with your teacher? ---I don’t know. I _ him before.
The doctor thinks he will pull ___ now. His temperature has gone down.
--Could you take a message for Mr. Green? ---Certainly. I _ him about something at any case, so it _ may other.
The death of her dog made her sad, and it took a long time to___ it.
---Mr. White didn’t come last night, did he? ---No. We _ for him. A whole night was wasted. A. had waited B. have been waiting C. were waiting D, had been waiting