Gabarito disponível
______ I went to Georgetown University on October 9, 2003, to interview Dr. James Alatis, I have to admit that I was nervous. ______ I had met him previously at an international convention (a mutual friend introduced us), I was sure that he wouldn't remember me.
(Adapted from ANCKER, William P. A call to service. English Teaching Forum. v. 50, n. 1, p.18-19, 2012.)
Resolução comentada
'When' (tempo) e 'Although' (concessão) completam o parágrafo.
A primeira lacuna pede uma conjunção temporal: 'When I went to Georgetown...'. A segunda pede ideia de contraste: 'Although I had met him previously..., I was sure that he wouldn't remember me'.
Análise das alternativas
A) Before/Since altera o sentido temporal e causal. B) After/Therefore: 'therefore' não conecta orações dessa forma. C) While/Besides não fazem sentido. E) During e Despite exigem substantivo, não oração com sujeito e verbo.
Referência: Gramática inglesa – conjunções.
Resolução comentada do VaiConcursos.