题目内容
--When shall we go planting trees in the hill?
--_______ it begins to rain, so they don't need watering.
A.Not until B.While C.Till D.Unless
A
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题目内容
--When shall we go planting trees in the hill?
--_______ it begins to rain, so they don't need watering.
A.Not until B.While C.Till D.Unless
A