单项选择题
The commercial purpose of a trade mark is（）the goods or services of a company from those of competitors.
A．to distinguish B．having distinguished C．distinguishing D．being distinguished
单项选择题 Were it not for your help, I（）in trouble now.
单项选择题 If you try to pass（）the problems, it would be impossible for you to make any progress in this field.
单项选择题 If you really want to apply for the dangerous job, I（）in your way.
