Question

It was in the 1990s _______ we were working together ____ we made friends with each other

1. A.
   that; when
2. B.
   when; that
3. C.
   that; that
4. D.
   when; when

Answer 1

B
考查含有定语从句的强调句型。第一空是定语从句，先行词为the 1990s，从句中缺少时间状语，所以用when，第二空，用that 为强调句型的标志，句意:就是在二十世纪九十年代我们一起工作的时候我们互相交了朋友。所以选B。