题文
Put __________ use in April 2000，the hotline was meant for residence reporting water and heating supply breakdowns.
| A．into | B．in |
| C．at | D．on |
推荐试卷
Put __________ use in April 2000，the hotline was meant for residence reporting water and heating supply breakdowns.
| A．into | B．in |
| C．at | D．on |
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