— How were things going that day?

— We were really tired out. We _____ 10 hours before we got to the village. [ ]

A. had walked

B. were walking

C. walked

D. have walked

亚洲国家中，人均国民生产总值(美元)居前两位的国家是(    )

A．日本、韩国

B．日本、以色列

C．沙特阿拉伯、新加坡

D．日本、新加坡