问题
选择题
—What were you doing _____ I phoned you yesterday?
—I was watering flowers in the garden.
[ ]
A. after
B. before
C. when
D. and
答案
答案：C
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—What were you doing _____ I phoned you yesterday?
—I was watering flowers in the garden.
A. after
B. before
C. when
D. and
答案：C