拼一拼,写一写。
cuì niǎo
chèn shān
dǒu qiào
qīng cuì
dàng yàng
wěi gǎn
zhù shì
yú wēng
____
________are in the same class. We are good friends.
如图是贯众的结构示意图,请据图完成下列填空: