Please don’t disturb Tom! He is busy now, with a lot of work ____.

A．done with

B．to do with

C．doing with

D．to be done with

对行经 * * 膀胱肿瘤切除术的患者，为早期发现和预防肿瘤复发。术后应采取（）

A.全身联合化疗

B.定期膀胱镜检查

C.应用干扰素或白细胞介素治疗

D.局部大剂量放疗

E.定期膀胱内灌注丝裂霉素等化疗药物或卡介苗