book on the desk is useful one. A．The; an B．A; a C．The; a D．The; /——青夏教育精英家教网——

摘要： book on the desk is useful one. A．The; an B．A; a C．The; a D．The; /

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book on the desk is useful one.

A．The; an

B．A; a

C．The; a

D．The; /

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________ book on the desk is ________ useful one．

The; an

A; a

The; a

The;/

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________ book on the desk is ________ useful one．

The; an

A; a

The; a

The;/

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--- Look at ______ book on the desk . Is it ______ useful one ?

--Yes, it is . In the book there is much advice on how to learn math well.

A．a, the B．the, a C．the, an D．a, an

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--- Look at ______ book on the desk . Is it ______ useful one ?

---Yes, it is . In the book there is much advice on how to learn math well.

A．a, the

B．the, a

C．the, an

D．a, an

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