Read the dialogue and choose. (选择适当的句子填空)

① I have a toothache.   

②You look sad.

③ See the doctor and take some medicine.

A: How are you？__________

B: Yes, I failed the English test.

A: I'm sorry to hear that.

B: How about you？

A: I feel sad, too. _________

B: _________

A: Thank you. I will.

血海穴的作用包括（）。

A、常用于月经不调、痛经等

B、常用于瘾疹、皮肤瘙痒、丹毒、膝内侧疼痛

C、以上都是

D、以上都不是