单项选择题

--Are you pleased with your work
--Yes, it couldn't be ______.

A．any better
B．any worse
C．the best
D．the worst
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单项选择题
It is difficult ______ a world record and even more difficult to ______ it.
A．keeping, set
B．keep, set
C．set, keep
D．to set, keep
单项选择题
The doctor ______ my forehead and said, Your forehead ______ hot.
A．felt, feels
B．felt, was felt
C．feels, felt
D．feels, is felt
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