There are fifty students in this class， ________ of them are boys，so the number of the boys is 30．（ ）
| A． |
three fifth |
| B． |
three fifths |
| C． |
three five |
Being blind is something _______most people can't imagine．（ ）
| A． |
不填 |
B． |
what |
C． |
who |
D． |
which |
Did you watch the football game yesterday？
Yes，I did．John is really a dark horse，Nobody _______him to go so far．（ ）
| A． |
wanted |
B． |
encouraged |
C． |
expected |
D． |
hoped |
He is very rich but that day he bought______ bike to save money for the poor children．（ ）
| A． |
an expensive |
B． |
a more expensive |
| C． |
the more cheaper |
D． |
the cheapest |
I have to be off right now．
What a pity! I______ you could stay a little longer with us．（ ）
| A． |
thought |
B． |
am thinking |
| C． |
think |
D． |
was thinking |
I'll go to visit my aunt in England _____ the summer holidays start．（ ）
| A． |
while |
B． |
since |
C． |
until |
D． |
as soon as |