The red hat is more expensive than the black hat

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Question 39. The red hat is more expensive than the black hat.
A. The red hat is cheaper than the black hat.
B. The red hat is as expenvie as the black hat.
C. The black hatis more expensive than the red hat.
D. The black hat is not as expensive as the red hat.
Question 40. It is necesssary for Nam to tidy his room everyday.
A. Nam has to tidy his room everyday.
B. Nam have to tidy his room everyday.
C. Nam don't have to tidy his room everyday.
D. Nam doesn't have to tidy his room everyday.