If you __________ succeed, you must study as hard as you can.
A．a(chǎn)re going toB．a(chǎn)re toC．will D．should
B
考查不定式做表語。句意：如果你要成功，你必須盡可能的努力學(xué)習(xí)。不定式作表語表示事先商定、安排或準(zhǔn)備要做的事情。故選B。
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