In the following words， which underlined （划线的） letters have a different sound from the others？（ ）
| A． |
brother |
B． |
throat |
C． |
them |
What time is it？
It's half _____ seven．（ ）
| A． |
past |
B． |
to |
C． |
at |
We can't leave here until our teacher _____．（ ）
| A． |
will arrive |
| B． |
arrives |
| C． |
arrived |
Could you tell me _____？
In Xinhua Bookstore．（ ）
| A． |
where you bought the book |
| B． |
where did you buy the book |
| C． |
where do you buy the book |
I think Mark is _____ of all the boys in our class．（ ）
| A． |
most outgoing |
| B． |
more outgoing |
| C． |
the most outgoing |
_____ interesting stories they are!（ ）
| A． |
What an |
B． |
How |
C． |
What |