题干
A: How many days ____ there in a week? B: There ____ seven.
A：is, is
B：are, are
C：is, are
D：are, is
答案(点此获取答案解析）
B
A: How many days ____ there in a week? B: There ____ seven.
A：is, is
B：are, are
C：is, are
D：are, is
