如果你想说“一周有七天。”,你应该说:________
A.There is seven day in a week. B.There are seven days on a week.
C.There are seven days in a week.
如果你想说“一周有七天。”,你应该说:________
A.There is seven day in a week. B.There are seven days on a week.
C.There are seven days in a week.