The student had difficulties reading, he would furrow his brow while doing what on a line of the book? - concentrating - concentration - acquiring knowledge - sleeping - written material  The best answer is
concentrating

What does running after balls lead to? - sweating - physical exertion - fitness - catching up with - sprinting  The best answer is
physical exertion

The inspector judged it to be a copy, it was not a what of the original artist? - creation - hatred - paste - soft copy - unique  The best answer is
creation