Choose the alternative that best completes the dialogue below. A. ____________ d...

Questão de Inglês da banca EsFCEx aplicada no concurso EsFCEx (2009). Confira a resolução completa abaixo:

Choose the alternative that best completes the dialogue below.
A. ____________ different types of penguins inhabit the South Pole?
B. I don?t know. Ten, maybe.
A. No, fifteen. And _____________ tall can they grow?
B. I have no idea. One meter?
A. That?s right. ___________ do they leave the South Pole?
B. Probably in winter.
A. Excellent.
B. _________ are you asking me all these questions?
A. Because I want to see if you did your homework!