We have been good friends __________ we joined the music club. A. before B. since C. until
I like watching people _____in the street.
Is that ____cat, Ross ? No, _____is white.
Our National Day falls ___ October 1 and thousands of cars pour into freeways ___ the early morning of the holiday.
—My sister is on holiday in Hainan. —I wonder ____.
Mr zhang speaks very loudly ___ all the people can hear him clearly.