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. _____

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