I went to my favorite restaurant one eve...

I went to my favorite restaurant one evening to have supper. I knew the owner very well. __36 _ I was waiting for the soup to arrive, I looked around to see if I knew anyone in the restaurant. It was __37_ that I noticed a man sitting at the corner table __38__ watching in my direction, as if he knew me. The man had a newspaper open __39__him, which he was __40__ to read, though all the while I could see that he was keeping an eye on me. When the waiter brought the soup, the man was clearly __41_ by the familiar way in which the waiter and I talked to each other. He became even more puzzled as time went on and it grew more and more obvious that I was well__ 42__ in the restaurant. In the end he got up and went to the kitchen. After a few minutes he came_ 43__ again, paid his bill and left without__ 44__ looking in my direction.

When I finished and was__ 45__ to pay my bill, I called the owner over and __46__him what the man had wanted. The owner at__47_ didn’t want to tell me. I __48__ “Well”, he said “ that man was a detective.” “__49__?” I said, much surprised. “he followed you here because he_ 50__ you were the man he was looking for,” the owner said. “He showed me a photo of the__51__ man. He certainly looked __52__ you! Of course since we know you here. I was able to make him __53 _that he had made a mistake.” “It’s__ 54__ I came to a restaurant where I’m where I’m known,” I said, “otherwise I __55__have been taken to police station!”

1.A While               B. After               C. Before              D. Until