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完形填空。
Sally’s old grandfather lives with her. Every morning he goes for a walk 1__ the park and come home 2___ half past twelve for his lunch. But one morning a police car 3___ near Sally’s house at twelve o’clock, and two policemen 4____ her grandfather to get out. One of them said to Sally,”The old man lost his way in the park and called us 5___ help, so we sent a car to bring him home.” Sally 6___ very surprised, but she 7___ the policemen and they left. “But, grandfather,” she asked, “you 8___ to the park very day for twenty years. How did you lose your way?” The old man smiled and said, “I didn’t lose my way. I was just 9___ and didn’t 10____ to walk home.”
（ ）1.A.in             B.at              C.on
（ ）2.A.on            B.in             C.at
（ ）3.A.stop           B.stopping        C.stopped
（ ）4.A.help           B.helped          C. helping
（ ）5.A.to             B.for             C.in
（ ）6.A.is             B.was            C.are
（ ）7.A.thank          B.thanks          C.thanked
（ ）8.A.go             B.went           C. goes
（ ）9.A.sad            B.tired            C.lose
（ ）10.A.wants         B.wanted          C.want