A landing on Mars is within the _____ of current physical theory.
| A．scheme | B．scope | C．scrap | D．scale |
An old _______ wants to see you.
| A．people | B．person | C．the people | D．the person |
Help yourself to __________.
| A．chickens and apples | B．chickens and apple |
| C．chicken and apple | D．chicken and apples |
Oh, dear. I forgot the two _________.
| A．room’s number | B．rooms’ number | C．room numbers | D．rooms’ numbers |
She has been in Tianjin for ten years. Tianjin has become her second _________.
| A．family | B．house | C．home | D．room |
________ mothers couldn’t go to the meeting, because they have gone to Shanghai .
| A．Mary and Peter’s | B．Mary and Peter |
| C．Mary’s and Peter | D．Mary’s and Peter’s |