Question

1. As soon as they had exchanged this admission,a wave of        passed through them both.

   A. relief   B. regret   C. excitement   D. sorrow

Answer 1

1. A注意对语境的理解以及用词的选择，上文说道：exchanged this admission (互相承认) ，因此，双方都松了一口气，relief是relieve的名词形式，此处意为"(紧张情绪的) 减轻，释放"。