--- 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 |
--- 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 |