—Sorry, I didn't have enough time. I really regret ______ my homework earlier.
A:attend; not to finish
B:attend; not having finished
C:join; not finishing
D:take part in; having not finished
一商贸集团从天津采购了2000吨食盐运往上海,最为合理的交通运输方式是( )
关于我国自然资源分布特点的说法,正确的是( )