When going up stairs or down stairs，we need to walk on the right，leaving the left space for the people who ___．（ ）
| A． |
hurry up |
| B． |
look around |
| C． |
run away |
When going up stairs or down stairs，we need to walk on the right，leaving the left space for the people who ___．（ ）
| A． |
hurry up |
| B． |
look around |
| C． |
run away |
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