1. Google has always been ahead of the times, creating innovative products time and time again.2. Our sales manager came up with a novel idea to sell our latest products, and we implemented the idea and made lots of sales.3. The company launched an original marketing campaign and achieved unprecedented success.4. Some PhD students, instead of coming up with original research, improve the existing research and still manage to get their degrees.
 new novel original innovativeoriginal 有原來也有創新的意思，常用來形容 research，而new 是形容新的感覺，而 innovative 跟 novel 則有創新的意思，兩者意思不一樣。< >
I have been recking my brain on this tough math question but I still cannot solve it.