从方框中选择合适的单词将短文补充完整。 A. lost B. asked for C. the Great Wall D. holiday E. got off F. told Mike went to Beijing on his 1 with his mother. On Monday, they went to 2 . On Tuesday, they bought presents for friends. But on Wednesday, Mike got 3 . He went to a policeman and 4 help. The policeman 5 him to take the No. 16 bus. Then 6 at the hotel. He arrived safely.