As we all know，the telephone ________ by Alexander Graham Bell in 1876.（ ）
| A． |
invented |
B． |
is invented |
| C． |
was invented |
D． |
|
Two bridge over the river five years ago in our city．（ ）
| A． |
build |
B． |
built |
C． |
were built |
D． |
are built |
The baby is sleeping， Please the radio．
Sorry，I′ll do it right now．（ ）
| A． |
tum up |
B． |
turn down |
C． |
turn on |
D． |
turn over |
Your dream will not come true you keep trying your best．（ ）
| A． |
when |
B． |
unless |
C． |
whether |
D． |
because |
It about eight minutes for the light to travel from the sun to the earth．（ ）
| A． |
pays |
B． |
costs |
C． |
spends |
D． |
takes |
We are happy to see our city is developing these years than before．（ ）
| A． |
quickly |
B． |
more quickly |
| C． |
very quickly |
D． |
the most quickly. |