What’s the   temperature in Beijing during April?

In the history of Chinese revolution, Taierzhuang Battle was a ________ battle in which both sides suffered heavy losses.

Doctor Zhang is a friend of mine who works in a ________ school.

 We do hope that one day the Chinese language will become a __________ language, that is, everyone in the world will communicate in it.

–Have you received Jack’s plan?--Yes, but I don’t think his plan is _____.