The boy often brushes his _______ before he goes to bed.
A. tooth
B. tooths
C. teeth
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How many _________ would you like?
A. pieces of bread
B. bread
C. pieces of papers
The cat caught two _______ last night.
A. mouses
B. mice
C. mouse
I can see three _________ in the zoo.
A. monkeies
B. monkeys
C. monkey
The Japanese ________ will not leave China until she finishes her study.
A. woman
B. women
C. man