目前治疗肿瘤患者采用的“化疗”,即使用化学药物抑制人体肿瘤细胞的DNA复制,这些肿瘤细胞就停留在
( ) ------What did you do last night? ------ I did my homework and _______ TV.
( ) Thank you ________ giving me so much help.
( ) The basketball ______________ the bed isn’t mine.
( ) It often rains __________ in the summer of Nanjing.
( ) There _________ a ruler and some pencils in the pencil-box.