问题补充：
Lots of people are wondering.
A. that China will win the first place in the next Olympic Games
B. what is wrong with the missing plane
C. why is the South Korean drama Man From the Stars so popular in China
D. where can we move if there is too much pollution on Earth
答案：
A. that China will win the first place in the next Olympic Games
(答案→)B. what is wrong with the missing plane
C. why is the South Korean drama Man From the Stars so popular in China
D. where can we move if there is too much pollution on Earth
解析：句意：很多人想知道失联的飞机有什么毛病？不管什么类型的定语从句，总是用陈述语序，即：从句的连接词后是主语、谓语、宾语的语序，从句的时态要与主句的时态保持一致。结合句意，故选Ｂ。
