26.____ the problem of method is solved,talking about the task is useless.A.Until B.Since26.____ the problem of method is solved,talking about the task is useless.A.Until\x05\x05\x05\x05B.Since\x05\x05\x05\x05C.After\x05\x05\x05\x05D.Unless
26.____ the problem of method is solved,talking about the task is useless.A.Until B.Since26.____ the problem of method is solved,talking about the task is useless.A.Until\x05\x05\x05\x05B.Since\x05\x05\x05\x05C.After\x05\x05\x05\x05D.Unless
26.____ the problem of method is solved,talking about the task is useless.A.Until B.Since
26.____ the problem of method is solved,talking about the task is useless.
A.Until\x05\x05\x05\x05B.Since\x05\x05\x05\x05C.After\x05\x05\x05\x05D.Unless
26.____ the problem of method is solved,talking about the task is useless.A.Until B.Since26.____ the problem of method is solved,talking about the task is useless.A.Until\x05\x05\x05\x05B.Since\x05\x05\x05\x05C.After\x05\x05\x05\x05D.Unless
B 既然.