Many of us have seen the dog who is full of beans outside the ring but, after stepping across the threshold of the ring, walks as if his feet are made of lead.

Many of us have seen the dog who is full of beans outside the ring but

1.	Many of us have seen the dog who is full of beans outside the ring but, after stepping across the threshold of the ring, walks as if his feet are made of lead.
A.	successful
B.	popular
C.	lacks energy
D.	energetic
Answer» E.