题干
—What did you do last night?
—
A：I washed my clothes．
B：I wash my clothes．
C：I'm going to wash my clothes．
答案(点此获取答案解析）
A
—What did you do last night?
—
A：I washed my clothes．
B：I wash my clothes．
C：I'm going to wash my clothes．
）是一种香料，一种合成路线如图： 
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