.There are thirty ___and eight hundred ___in our school.
A. women teachers/girls students
B. women teachers/girl students
C. woman teachers/girls students
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Look! There ___ some young children playing in the park.
A. are
B. has
C. have
I am reading ___ interesting story.
A. an
B. a
C.the
There are two ___ in my pencil-box.
A.knife
B. knifes
C.knives
They have ___ on the hill.
A. apple trees
B.apples trees
C.apples trees