1 . English is a course for anyone in university, ________ his or her major or previous educational qualifications are.

A．no matter

B．whether

C．however

D．whatever

2 . The proposal, debated at this year’s CITES Conference, lists Mako sharks under Appendix II, meaning that they can’t be traded ______ it can be shown that fishing wouldn’t threaten their chances for survival.

A．until

B．unless

C．whether

D．when

3 . 无论遇到任何苦难，我们都不能半途而废。（no matter）(汉译英)