While there are some differences in the education systems in many countries in the world, education is __________.

While having breakfast, Lee went through all the ______ ads in the newspaper, hoping to find a suitable job.

 I tried hard to get some information about the new technology from him, but he remained ______.

—He failed the exam again！What should I do，Miss Wang?—In my opinion，your son is________than stupid.

At the meeting, they sat very_____ and had a _____ talk, but I didn’t know what they were talking about.