[解析]
71 Lingling's room.根据Look is room.看.故答案为:Lingling's room.
72 White and black.根据Here's a box the .Is black,it .It's and .铅笔盒在桌子上?不,是黑白相间的.
73 A pen and an eraser.根据This a pen black this an .It's .They're (都) the box,是黑色的,是蓝色的.故答案为:A pen and an eraser.
74 In the drawer.根据That a ruler,it's .It's the 那也是一把尺子,在抽屉里.
75 On the sofa.根据Where Lingling's book,it's ,on sofa?在这儿.故答案为:On the sofa.