Shopping online can save much time as you go to a shop or walk around crowded sh
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Shopping online can save much time as you _______ go to a shop or walk around crowded shopping centers.
A. don’t have to B. oughtn’t to C. won’t D. mustn’t
试题答案
A
1. as引导的原因状语从句为陈述语气，表示“不必要”。