The answer is that they both can go without drinking water, hopefully this was helpful
He met a hubshi girl who seemed interested with Santosh. Furthermore, he got English lesson by her and their relationship became closer. This event makes Santosh realizes of his existence after he feels alienated by his surrounding before. Since then, he took so much care of his physical appearance.
the answer for this question is A) reviewing
For the 3rd one it would be D. You see the evidence when it says “to avoid having students gather in groups”
I think it is D
Hope my answer help you?