my brother can () very well.He is () now.A.sing,singing B.singing,sing csing,sings

问题描述:

my brother can () very well.He is () now.A.sing,singing B.singing,sing csing,sings

选A
我兄弟唱歌唱得很好.他现在正在唱歌.
can 是情态动词,后面用动词原型,now 表示现在进行时,用动词ing分词.