In order to use these materials for profit, you must gain formal_____from our co

游客2025-06-18  0

问题 In order to use these materials for profit, you must gain formal_____from our company in writing.

选项 A、approving
B、approval
C、approved
D、approves

答案 B

解析 作为动词gain的宾语,必须使用名词approval。
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