_____ I admit that all these problems are difficult, I don’t agree that they cannot be solved.
#31404
A
Unless
B
While
C
Until
D
Since
推荐题目
____ he was not rich enough to buy whatever he wanted, Edison decided to make his new laboratory the best.
#32633
A
Although
B
Since
C
When
D
As
most parents care about is to provide the best education for their children.
#32151
A
That
B
How
C
What
D
Whether
At the party the host presented an award to ______ took part in saving the drowning child.
#32708
A
whomever
B
whom
C
who
D
whoever
---- I wonder how much you charge for your services． ---- The first two are free ____ the third costs $30．
#32193
A
while
B
until
C
when
D
before