Why is QoS important in a converged network?（）
Everything in St. Patrick Day is green. Why?
Why is Father Christmas thinking about “black chimneys”?
Why is brainstorming important?
Why is integrity compared to the weather?
Why is manufacturing in China so popular?
Why is Rose arranged to marry Cal?
Why is the protagonist death given significance?
Why is Yellowstone National Park important?( )
Why is the short story named “Coward”?
Why is it called square dance?
1. Why is Nathan confused?
Why is touching encouraged in many sports?
Why is Lucy eating less than before?
Why is Barbie no longer so popular？
why is the woman busy these days？
“Why is that ” she wanted （）know.
Why is the word“different”in italics？
What I want to know is why he is still here. （翻译)
Why is the man late？
Why is Margaret Chan disappointed？
Why is Ms. Charlotte calling Ms. Wong？
Why is Ronaldo going to Europe？
Is the comfortable zone for everyone the same？ Why or why not？
