There is no doubt _______he will come tomorrow, but I do doubt _____he will come on time.

A. that; that B. that; whether

C. whether; whether D. whether; that

B

【解析】

試題分析：考查doubt的用法。句意：他明天會(huì)來(lái)，這是毫無(wú)疑問(wèn)的；但是我懷疑的是他是否會(huì)按時(shí)到達(dá)。doubt用于否定句時(shí)用that引導(dǎo)后面的從句；doubt用于肯定句時(shí)用whether/if引導(dǎo)賓語(yǔ)從句。There is no doubt that...“......是毫無(wú)疑問(wèn)的”，排除C、D；第二空表示不確定，應(yīng)該用whether或if，排除A，故選B。

考點(diǎn)：考查doubt的用法

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