-----Mr.Smith, ________ girl wants to see you.

----If that’s _________girl who has fair hair and wears a red dress, I will see her.

A．the; the

B．a; the

C．the; a

D．a;a

After doing market research, all the researchers think it ________ to invest a large sum of

money in the project.[ ]

A.  worthless  

B.  priceless

C.  valuable  

D.  worthwhile