At first, the speaker was referring to the problem of pollution in the country, but halfway in her speech, she suddenly () to another subject

单项选择题The boy has four appels: two yellow() and two red

A. one; one
B. one; ones
C. ones; other
D. ones; ones

单项选择题Automobiles are becoming()among the wealthy people in China today

A. favourable
B. fashionable
C. famous
D. familiar