The air in Lanzhou is getting much _____ now than a few years ago .
#45994
A
clean
B
cleaner
C
cleanest
D
the cleanest
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---Can you work out the maths problem? ---Sorry, I can ______ understand its meaning.
#47807
A
almost
B
quite
C
hardly
D
nearly
The children all looked_______ at the broken model plane and felt quite_______.
#45242
A
sad, sad
B
sadly, sadly
C
sad, sadly
D
sadly, sad.