题干
情景交际，根据对话内容，选择方框内句子完成下列对话。每个句子只能使用一次。
A: Hello, Mike.
B: Hello , John. ____.
A: I'm drawing pictures . ____.
B: I'm writing a letter .____.
A: No, I didn't. I was at home .
B: Tomorrow is Sunday .let's go to climb the mountains .
A: ____.
B: What are you going to take?
A: ____
B: Me, too
A: What time shall we go ?
B: Let's go at half past seven .
A: OK！
答案(点此获取答案解析）
D,B,C,A,E
，∠AOB=50°，则∠ADC的度数是（ ）
