问题
选择题
—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
答案
答案：A
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—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
答案：A