[单项选择]

Pretty Good
When Spanish football club Barcelona paid US$35 million for Ronaldinho last summer, they weren’t buying a pretty face. "I am (51) ," admits the Brazilian superstar (超级明星). "But everyone has got a different kind of beauty. What I (52) have is charm."
Indeed he has. His buck teeth (龅牙), flowing hair, big smile, and of course his (53) skills are always eye-catching on the pitch. The 23-year-old striker (中锋) scored two goals in a 3-2 win over Deportivo La Coruna on March 1. It was Barcelona’s sixth win in a row and, thanks to their Brazilian’s 10-goal contribution, (54) looked like a poor season could now end a success.
Ronaldinho - full name Ronaldo De Assis Moreira - is one of many South Americans who learned their skills playing in the backstreets before (55) them off on the world stage.
Great things were (56) when Gremio signed him as a seven-year-old
A. that
B. which
C. what
D. who