问题补充：
By carefully questioning,they managed to the information they were looking for.
A. burst out
B. break out
C. dig out
D. give out
答案：
A. burst out
B. break out
(答案→)C. dig out
D. give out
解析：考查动词短语：A.burst out 突然爆发B. break out爆发C.dig out挖掘出D.give out分发，用尽，句意：通过小心询问，他们设法挖掘出想要找的信息。选C。
