问题补充：
---- Have you heard that a building was blown up last weekend with a number of people in it?
---- Yes, news came as shock to me.
A. / ; the
B. the; a
C. a ; a
D. the; the
答案：
A. / ; the
(答案→)B. the; a
C. a ; a
D. the; the
解析：第一个空指上面的那个消息，所以是特指，用定冠词the, 第二个空是抽象名词具体化，a shock “一个让人震惊的消息”，所以答案为B
