低钾血症的原因中除外

A．完全禁食2天以上

B．肠瘘

C．腹泻

D．长期使用利尿剂

E．弥漫性腹膜炎

— Where is Tom's and Peter's homework?

— The two students ______ ill yesterday, and they didn't come to school.[ ]

A. were all

B. all were

C. both were

D. were both