【原创】In addition to world hunger, some environmental problems human activities have contributed to ______ soon.
A.need solving | B.needing solving |
C.needing to be solved | D.need to solve |
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【原创】In addition to world hunger, some environmental problems human activities have contributed to ______ soon.
A.need solving | B.needing solving |
C.needing to be solved | D.need to solve |
试题篮
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