选择题：乘客情况抽样调查有两种调查方式，即随车调查和站点调查。

(2分)You （ ） enough time to do your homework. A. do B. are C. there be D. have

(2分)The teacher ______ for a few seconds till he found proper words to make his

(2分)We （ ）you more help, but we’re very busy. A. should give B. should have give

(4分)Today there are （ ）. A. more housewives B. more women working outside the ho

18、 2020年，中国将有超过7100公里的轨道交通线路，我国的城市轨道交通具有良好的发展前景。×√