A. Oh, I'm sorry.
B. It's green. We can go.
C. They're waiting.
D. I'm going to work.
E. Thank you.
His eighth book ________earlier this year and was an instant bestseller.
下列各句中，没有语病、句意明确的一项是（ ）
①体表有羽毛 ②用肺呼吸并用气囊辅助呼吸 ③体温恒定 ④通过产卵繁殖后代⑤前肢覆羽成翼 ⑥善于飞行
