—     useful invention it is.—Yes, It helps us a lot.
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A
What an
B
What a
C
How
D
How a
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How ________the woman is to save the boy from the danger of earthquake.
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A
brave
B
interesting
C
natural
D
strange
__________terrible luck he had yesterday!
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A
How
B
what
C
How a
D
What a
______ good news they told us yesterday! 
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A
How a
B
How
C
What
D
What a
— ________ bad weather !—Yes. The radio says it will be even ________later on.
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A
What a, bad
B
How, worse
C
What, worse
D
How, worst