＿＿＿＿＿, you have given me a lot of help.A.Tell the truthB.To tell the truthC.Telling trueD.Telling truth
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B解析常见的作插入语的不定式短语有：so to speak(可以说是),to be sure(无疑地),to sum up(概括地说),to tell the truth(说实话),to be honest(坦率地说),to be frank(坦率地说)，to be fair(说句公道话)。