A write,sell用主动表被动,描述事物的特征
B sound是系动词,后面加形容词,well的形容词为good,而too…to结构表示“太…以至于”符合句意
B 根据talk to sb. for help
C playing in Hong Kong是指前面的a good tome,we have是定语从句,修饰a good time
It is so selfish of Tom to have eaten all the cakes.
It is so kind of you to say so.