题干
---Remember the first time we met, Mary?
---Sure．You ______ in the supermarket．
A：had shopped
B：have shopped
C：were shopping
D：shopped
答案(点此获取答案解析）
C
A：had shopped
B：have shopped
C：were shopping
D：shopped
十个数码和一个虚数单位
可以组成虚数的个数为( )