男性患儿，5岁半，发热3天，体温38.5℃左右，伴头痛、肌痛，左耳垂下肿大、疼痛，张口时疼痛加重。血常规检查WBC4×10⁹／L，淋巴细胞0.7，约3周前曾探望有相同症状的表哥。

对本患儿需注意下列哪些并发症（）。

A.脑膜炎

B.喉、气管、支气管炎

C.支气管肺炎

D.心肌炎

E.睾丸炎

F.败血症

The buses, _____ were already full, were surrounded by anxious people.

A．all of them

B．all of which

C．they all

D．all which