2.I don’t think you’ll able to understand this formula ____you finish school.A.as if B.only when C.even D.even when

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2.I don’t think you’ll able to understand this formula ____you finish school.A.as if B.only when C.even D.even when
2.I don’t think you’ll able to understand this formula ____you finish school.
A.as if B.only when C.even D.even when

2.I don’t think you’ll able to understand this formula ____you finish school.A.as if B.only when C.even D.even when
即使当……的时候