There are some _____ on the shelf.
A. forkes
B. fork
C. forks
D. forker
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You must _____ these knives. They are very blunt.
A. sharp
B. sharpen
C. sharping
D. sharply
Sharpen _____ pencils.
A. that
B. this
C. these
D. a
The box is full. please _____ it.
A. empty
B. sharpen
C. fill
D. full
This room is not clean. It is very_____.
A. tidy
B. untidy
C. clean
D. not dirty