In face of failure, it’s the most important to _______ a positive state of mind.

I know a little about Thailand, as Ithere three years ago.

It is well known that nature has provided Shangri-la(香格里拉) with endless natural treasures, making the land happy home for the local people．

The meeting ______ for a week .

It is very important_______ people to have food and water every day. [ ]