we chinese wil have a ——vacation.A.seven day B.seven-day C.seven-days D.seven day's
问题描述:
we chinese wil have a ——vacation.A.seven day B.seven-day C.seven-days D.seven day's
答
we chinese wil have a ——vacation.A.seven day B.seven-day C.seven-days D.seven day's
选B
形容词之间用-连接,都用单数形式