This time next month, most people (use)_____________ the internet for entertainment? Keep silent! You (sing)_____________ so loudly

6.This time next month, most people (use)_____________ the internet for entertainment.
7.Keep silent! You (sing)_____________ so loudly.
8.I (work)_____________ at KD company for three years.
9.I (just buy)_____________ two tickets. My wife and I (see)_____________ a movie tonight.
GIẢI THÍCH CHI TIẾT Ạ!!