Question

用所给动词的适当形式填空。

       Michael and Derek arc good friends, but they like to pull each other's leg sometimes. One day during
  the holidays they decided   1_  (go) to London together. They went to the station and bought their tickets.
   When the train came in, Michael boarded it first and without    2   (know) it, dropped his ticket on the
  platform as he got into the carriage. Derek, who was close behind, saw the ticket fall and quickly picked
  it up. Without a word to his friend, he put it in his pocket. After they had been in the train a little while,
  they heard the ticket inspector coming down the corridor, shouting, "Ticket, please!" Michael looked for
  his and of course   3   (not find) it. "Oh dear, I can't find my ticket, Derek," he said. "  4   (have) another
  look, Michael; it must be somewhere," said Derek. "No, I can't find it anywhere. Whatever shall I do?  
  Perhaps you had better hide under the seat; then the inspector   5   (not know) you are here." So Michael
   crawled under the seat as far as he could and lay perfectly still. Presently the door opened, and the
  inspector came in. "Ticket, please," he said. Derek handed him two tickets, and said, "This is mine. The
  other belongs to my friend who prefers to travel under the seat. "

1. _____ 2. _____ 3. _____ 4. _____ 5. _____

Answer 1

1. to go     2. knowing      3. couldn't find     4. Have     5. won't know