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Itischeapertosendatextmessagethan(talk)onamobilephone.(适当形式)给的答案是:talking.than为介词.但我写:totalk.我的解释是:than为连词.请问:谁对谁非?理由?

题目详情
It is cheaper to send a text message than_________(talk) on a mobile phone.(适当形式)
给的答案是:talking.than 为介词.
但我写:to talk.我的解释是:than 为连词.
请问:谁对谁非?理由?
▼优质解答
答案和解析
to talk.
前后一至,对应於to send