单项选择题


A．happy
B．sad
C．sorry
D．happily
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单项选择题
A．easy enoughB．enough easyC．difficult enoughD．enough difficult
A．easy enough
B．enough easy
C．difficult enough
D．enough difficult
单项选择题
A．expensiveB．cheapC．importantD．useful
A．expensive
B．cheap
C．important
D．useful
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