摘要： Scientists are trying to develop a special material, they will make use of in space. A. it B. that C. what D. one
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Scientists are trying to develop a special material, _______ they will make use of in space.
| A．that | B．what | C．it | D．one |
Scientists are trying to develop a special material, _______ they will make use of in space.
A. that B. what C. it D. one
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1. Scientists are trying to develop a special material, _______ they will make use of in space.
A. it B. that C. what D. one
查看习题详情和答案>>