You can’t live water air(空气).A、with, and B、without, or C、with, or
Betty is in front of me,so I am ________Betty.
There’s______old pencil on the book. The pencil is _____pencil.
--_______students are there in your class,Mr Li? --Fifty.
---How’s your mum? ---She’s ________.
---What color_____ the cats? ---I think ________white and black.