— I told you that he would come to see you.
— Actually I had little doubt _____ it was true.
A．whetherB．thatC．sinceD．if
B
選B。 little doubt 表示“不懷疑”，要用that來引導(dǎo)賓語從句。而whether, if為同類項，表示“是否”，經(jīng)常用于肯定句中。
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