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( ) 16. --- What’s this, Xiao Hong?
- It’s _____ orange.
A. a B. an C. / D. the
( ) 17.Two and four is________.
A. five B. six C. seven D. eight
( ) 18.---What’s this _____ English? ---It’s an eraser.
A. in B. of C. on D. at
( ) 19.These _______ her parents. That _______ her sister.
( ) 16. --- What’s this, Xiao Hong?
- It’s _____ orange.
A. a B. an C. / D. the
( ) 17.Two and four is________.
A. five B. six C. seven D. eight
( ) 18.---What’s this _____ English? ---It’s an eraser.
A. in B. of C. on D. at
( ) 19.These _______ her parents. That _______ her sister.

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