He made another wonderful discovery, ______ of great importance to science.
#92237
A
which I think it is
B
which I think is
C
which I think
D
I think which is
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_____, and I believe you will realize your dream. 
#92800
A
Making a little bit more effort
B
Make a little bit more effort
C
To make a little bit more effort
D
If you make a little bit more effort
Her behavior is __________.
#93287
A
worthy praise
B
worthy to be praised
C
worth to be praised
D
worth being praised