一道英語語法題,Mrs Smith and her twins ( )the dancing club.A.is goi

題目：

一道英語語法題,
Mrs Smith and her twins ( )the dancing club.
A.is going to join B.is going to join in C.are going to join D.are going to join in
求答案並分析

解答：

我覺得應該選C
主語是 Mrs Smith and her twins 所以 be動詞應該用 are
加入的是俱樂部 應該用 join 例如 join the party
如果是某活動 或 人羣 用join in
個人觀點 如錯見諒