Our country are working even harder now to _______ the gap between the developed countries and ours.

Paul attends very ________ meetings，and when he does，he has very ________ to say．

She is so ____ towards others that everyone gets on well with her. 

Chinese people think a lot about food. In fact, I think that they are sometimes _____ with it.

Though flu is a      disease,it can cause death.