“常回家看看，回家看看，哪怕帮妈妈刷刷筷子洗洗碗；常回家看看，回家看看，哪怕给爸爸捶捶后背揉揉肩。”这段歌词启示未成年子女[ ]

A．力所能及地以实际行动回报父母的养育之恩

B．经常听取父母的教训，一切听从父母的安排

C．年龄小，不必履行赡养扶助父母的义务

D．必须承担起父母的一切生活费用

Not only______ polluted but _____ crowded.    [    ]

A. was the city;were the streets        

B. the city was;were the streets    

C. was the city;the streets were        

D. the city was;the streets were