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
练习册系列答案
相关题目
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