Living in the northwest involves a lot of problems, ______ sandstorm is the wors

游客2024-10-26 50

问题 Living in the northwest involves a lot of problems, ______ sandstorm is the worst.

选项 A、not to mention
B、of which
C、let alone
D、for what

答案 B

解析

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Livinginthenorthwestinvolvesalotofproblems,______sandstormisthewors