Who is singing in the next room Is it Amy—No, it be her. She has gone to Yunnan on holiday.

t weather will continue tomorrow, when a cold front________to arrive

Some pre-school children go to a day care center, _____ they learn simple games and songs [ ]

According to the recent survey, cancer is the leading cause of death among young adults in this area, _____ women

Who listens ________, Tom, Jack, or Bill