Which underlined letters of the words have a different sound?
| A．start | B．quarter |
| C．far | D．arm |
South Africa (南非） is acountry.
| A．developed |
| B．developing |
| C．develop |
| D．development |
Columbus __________ America in 1492.
| A．discovered | B．looked for |
| C．invented | D．made |
-Have you visited New York?
-Yes, I have. I __________ there twice.
| A．have gone | B．will go |
| C．have been | D．went |
Our English teacher __________ to England. She'll come back in ten months.
A. have been
B. has been
C have gone
D. has gone
The music made me think of the __________ of a running stream.
| A．sound | B．noise |
| C．voice | D．shout |