题目内容
. We all demanded the new type of machine ____________ put into use as soon as possible.
| A.refer to | B.referred to be | C.refer to be | D.referring be |
B
解析
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题目内容
. We all demanded the new type of machine ____________ put into use as soon as possible.
| A.refer to | B.referred to be | C.refer to be | D.referring be |
B
解析
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