It is getting colderI hope the sudden change of climate _____ you

The student said there were a few points in the essay he _____ impossible to understand.

When he got off the crowded bus,he found his pocket________and the disk in it with the important documents gone.[ ]

He told me that he would remember the days in Beijing University forever____ he got much help there from Professor Zhu

While there are some differences in the educational systems in many countries in the world, education is________. [ ]