In communication, a smile is usually _____ strong sign of a friendly and _____ open attitude.

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

In communication, a smile is usually _______ strong sign of a friendly and _______ open attitude.

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

In communication, a smile is usually _____ strong sign of a friendly and _____ open attitude.

In communication, a smile is usually _____ strong sign of a friendly and _____ open attitude.

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

In communication, a smile is usually________ strong sign of a friendly and ________ open attitude.

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

In communication, a smile is usually _____ strong sign of a friendly and _____ open attitude.

In communication, a smile is usually ______ strong sign of a friendly and ______  open attitude.

      A. the, /     B. a, an            C. a, /                 D. the, an

In communication, a smile is usually           strong sign of a friendly and      open attitude.

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

In communication, a smile is usually _____ strong sign of a friendly and _____ open attitude.

In communication, a smile is usually __________ strong sign of a friendly and _______ open attitude.

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