【題目】____ he will offer us enough help doesn’t matter a lot to our success.

A. If B. Whether

C. Before D. How

【答案】B

【解析】考查主語從句 結(jié)合語境可知句意：他是否提供幫助對于我們的成功沒有什么關(guān)系。If不可以引導主語從句，故選B。

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