初步诊断是哪一种病()

A．甲状腺舌囊肿

B．鳃源性囊肿

C．肿大淋巴结

D．颌下腺囊肿

E．囊性畸胎瘤

-Would it be________for you to help me repair my computer after work?

-Yes.Wait for me in your office.[ ]

A．fortunate  

B．convenient

C．formal  

D．patient