Your English is very good, who taught you—– Nobody. I taught _____.

It is reported that in our country cities ________heavy air pollution that is 30 percent above the national standard or highershould try to meet standards by 2030.

Not only my classmates but also my mother ______ getting interested in Korean stars.

__confidence and the necessaryequipmnt, they failed to rescue the 42 miners trapped in the coal mine.

are you going to do that— I am going to take acting lessons.