---Is it polite to speak and laugh loudly ?---No I don’t think so.A. in public B. at lea

问题补充：

---Is it polite to speak and laugh loudly ?

---No, I don’t think so.

A. in public B. at least C. on time

答案：

解析：本题考查介词短语。in public大庭广众下；at least至少；on time按时。句意：——在公众场合大声说笑有礼貌吗？——不，我不这样认为。

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