A．factorB．doubtC．theoryD．challenge

Was there a course you found particularly challenging？

Was there a course you found particularly challenging？

I wonder what your aim in life is.A.want to askB.wan to doubtC.want to agreeD.want to know

There is no question of success. The underlined word means______.A．possibilityB．doubtC．sig

【C14】A．businessB．argumentC．troubleD．challenge

College is a new and challenging experience, and new and challenging experience tend to pr