5．A good teacher is ________who is always doing things for the good of the students.
| A．that | B．those | C．the one | D．One |
—__________ the computer be repaired by him?
—No, I'd rather he __________ it repaired.
| A．Will；has |
| B．Shall；had |
| C．Should ； have |
| D．Can ； has |
My uncle's house in the downtown area is much smaller than ours, but it is twice __________ expensive.
| A．as |
| B．so |
| C．too |
| D．very |
__________ is known to everybody, the moon travels around the earth once every month.
| A．It |
| B．As |
| C．That |
| D．What |
Try __________ she might, Sue couldn't get the door open.
| A．if |
| B．when |
| C．since |
| D．as |
The missing boy was last seen __________ near the lake.
| A．playing |
| B．to play |
| C．to playing |
| D．played |