Summer is ______ than winter.
A. warmer
B. warm
C. warmmer
D. more warm
These cars are ______in China.
A. expensiver
B. expensive
C. more expensive
D. the most expensive
You are no ______ than I am at sing. I think I am the ______ singer in the world.
A. worse ; worst
B. worst; worse
C. more worse; the worst
D. more worst; the worse
Your work is much ______ than it was last week.
A. good
B. better
C. more good
D. the best
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