—Is this your eraser? —No, it isn’t______. I think it’s______.
Please give me _________.
Beijing is ______big city and it’s ________ capital of China .
This is a bridge _______ the river and there are many boats _______the river .
---Hello! Who’s that _______ ?---This is Mary . I’d like to ______ to Andy about tomorrow’s trip.
---_______ they _______ have a meeting this weekend ?--- Yes , they are .