singing and dancing are my favorite 这句话动词为什么加ing

I like dancing and singing They are ----(crazy)about dancing and singing. Mary likes singing and dancing.一般疑问句 She likes singing and dancing否定句 singing and dancing 这个英语是什么意识 My____(爱好)are reading ,singing and dancing. 5.They are singing and dancing in the music room.(对are singing and dancing提问 She likes singing and dancing.对singing and dancing进行提问.必须是（ ） （ ）she （ my hobbies are singing,dancing and reading可不可以说成my hobbies are singing,dancing ,reading the girl likes singing and dancing对画线提问 I like singing and dancing .（改为选择疑问句） 英语填空:They are singing and dancing h___ The girls are singing and dancing happily 是什么结构 Lucy is a l___ girl.she likes singing and dancing tom likes singing and dancing变否定句 L like singing and dancing.（改为选择疑问句） they have f_____ singing and dancing.开头字母已给出 she ,and,singing ,likes,dancing.请组成一句话!