— Could you help me do some cleaning after school?
— If I _______, I will do it.
A．a(chǎn)m freeB．will be free
C．have had timeD．had time
A

試題分析：句意:-放學后你能幫助我打掃教室嗎？-如果我有空，我會幫你的。if 如果，引導條件狀語從句，從句中用一般現(xiàn)在時，主句用一般將來時，故選A。B選項是一般將來時；C選項是現(xiàn)在完成時；D選項是一般過去時。
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