无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

單項選擇題

Construction of the railways helped to develop the national （） of Tanzania and Zambia.

A.economic
B.economies
C.economics
D.economical

你可能感興趣的試題

單項選擇題

Take it（）It is nothing but a joke.

A.easy
B.easily
C.serious
D.seriously

單項選擇題

I'm（）to graduate in the next half of the year.

A.owing
B.thanks
C.due
D.because