题目内容
18. You trust an online shop just because it has a beautifully designed website.
A. shouldn't B. mustn't
C. couldn't D. needn't
18. A考查情态动词。句意:你不应该因为网上商店有设计漂亮的网站而相信它。shouldn't不应该;mustn't禁止; couldn't不可能 ;needn't不必。
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