[ Grammar ]
My grandparents are ___, but they are happy living in the village.
A. sick
B. old
C. young
D. sad

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Mixed General Quiz › ViewAt 1,950 meters, Cheju island’s Mt. Halla is the ___ point in South Korea.
a. higher
b. highest
c. most high
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It _________ been Mickey I saw at the party. He didn’t recognise me at all.
A. must have
B. should have
C. might have
D. could have