题目

    It was a very foggy day in London Mr. Smith from Edinburgh arrived to go to a very important meeting，but no buses or taxis were running because the drivers  64  （be not） able to see more than a yard in front of them．It was nine o’clock，and his meeting was at ten，so he wanted to walk to the meeting．But when he looked out into the street，he saw nobody  65 （walk）in the street．        While he  66  （stand）there，a young man came up to him and said，“Sir，If you want to go somewhere，I  67（guide）you．”     Mr. Smith was very ________，________。小园香径独徘徊。