According to the rules of the factory, you can ask for leave ________ you have a doctor’s diagnosed note.
A．now thatB．on condition thatC．unlessD．even though
B
考查連詞。A既然；B=if如果；C除非，如果…不;D 即使；結(jié)合句意可知B正確。句意：根據(jù)廠規(guī)，如果你有醫(yī)生的診斷條，你就可以請(qǐng)假。
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