____ most efficient way to understand thousands of new words is to gain ____ good knowledge of basic word information.

____ most efficient way to understand thousands of new words is to gain ____ good knowledge of basic word information.

____ most efficient way to understand thousands of new words is to gain ____ good knowledge of basic word information.

A．A; a.                                 B．The; /

C．A ; /                                 D．The; the

____ most efficient way to understand thousands of new words is to gain ____ good knowledge of basic word information.

A．A; a.             B．The; /            C．A; /              D．The; the

____ most efficient way to understand thousands of new words is to gain ____ good knowledge of basic word information.

1. A.
   A; a.
2. B.
   The; /
3. C.
   A; /
4. D.
   The; the