I lost my friend’s book. So I have to _____it. A. spend B. cost C. pay for
A: Are there ____new pens in your pencil--box?B: Yes, there are ____.
A: When do you usually have dinner?B: ____6:30____the evening.
I like English, ____ I am not good at it.
There is ____ office on _____first floor.
A: Is the pen on the desk? B: ____.