IT IS THE FIRST TIME _____.A. NUMBER B. POPULATION C. CROWD D....

31. - 30 BAI TRAC NGHIEM VOI KEYS FOR 9 P
30 BAI TRAC NGHIEM VOI KEYS FOR 9 P

31. It is the first time _____.

A. number B. population C. crowd D. total

A. I come here B. I came here C. I have come here D. I will come here