【題目】You have been to Singapore, for you know so much about the local customs.

A. must B. should

C. need D. can

【答案】A

【解析】考查情態(tài)動詞。A. must 一定; B. should應(yīng)該; C. need需要; D. can能,會。

你一定去過新加坡,因?yàn)槟銓Ξ?dāng)?shù)仫L(fēng)俗了解得太多了。此處是情態(tài)動詞must have done表示對過去事情有把握的肯定推測,故選A。

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