问题补充：
---Now, children begin to learn English at a very early age. It is really a good thing?
---.
A. Yes, just in case
B. Well, it depends
C. Don’t mention it
D. Believe it or not
答案：
A. Yes, just in case
(答案→)B. Well, it depends
C. Don’t mention it
D. Believe it or not
解析：A. Yes, just in case是的，以防万一 B. Well, it depends那要看情况 C. Don’t
mention it何足挂齿 D. Believe it or not信不信由你；句意：现在，孩子们在很小的时候就
学英语，这真是个好的事情吗？那要看情况而定呢！故选B
