根据语境，填入适当的词语或句子，补全对话。

A: How dirty your clothes are! What did you do today?

B: We planted trees just now.

A: Oh, I         1          it's Tree Planting Day today. Where did you work?

B: At the foot of the hill.

A:          2           ?

B: The one behind our school.

A: How did you get there?

B: On foot. It's not         3         our school, you know.

A: But what made your clothes so dirty?

B: I        4        the river when I was carrying water.

A: Bad luck. You'd better go to see a doctor.

B:          5          . Only my shoes are wet through.

患儿男，11岁。6年前因呕吐，查血压180／110mmHg，诊断高血压，到某医院治疗，呕吐消失，血压仍高于正常，且出现阴毛，喉结第二性征表现。B超示双侧肾上腺皮质增生。口服降压药物，血压常在160～150／110～100mmHg。查体：皮肤色素沉着，胡须、腋毛及喉结发育，阴毛典型男性分布，呈TannerⅢ期，睾丸容积4.5ml。

为明确诊断，下一步需完善哪些检查（）

A.血浆ACTH、F

B.电解质

C.肾素、血管紧张素、醛固酮

D.染色体

E.胸片

F.肾上腺CT

G.性腺激素

H.腹部超声