--______ interesting the storybook is!--Yes. I have read it twice.
#65645
A
What
B
What an
C
How
D
How an
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_________ it is! Thank you very much! 
#67117
A
What valuable advice
B
What a valuable advice
C
How good a suggestion
D
How good advice
______ honest man he is! 
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What
B
What an
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How
D
How an
_____ hard work it is! But _____ fun it is to finish walking the trail.
#66956
A
What; how
B
What; what
C
How; how
D
How; what