The elevator in the teaching building was always in the summer vacation. That was why I chose to climb the stairs instead.
| A．breaking off | B．breaking up |
| C．breaking out | D．breaking down |
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The elevator in the teaching building was always in the summer vacation. That was why I chose to climb the stairs instead.
| A．breaking off | B．breaking up |
| C．breaking out | D．breaking down |
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