____ you try, ____ you will understand.
As…as
B. So…as
C. The more… the more
D. Not…until
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____ the TV set is very expensive, I still want to buy it.
A. Since
B. However
C. Because
D. Athough
We will go to the zoo____ the weather is bad.
A. even if
B. until
C. if
D. whether
I will give the book to____ needs it.
A. whenever
B. wherever
C. whatever
D. whoever
She gave up____ she was closed to success.
A. if
B. since
C. until
D. when