The farmers suffered a heavy ________because of the terrible storm.

I can remember very few ______ when he had to cancel his plans because of poor health.

There might be life on other planets, but so far scientists haven’t found enough _____ to prove it.

It takes time to build ______ when you are learning a difficult skill.

After our government launched a (n)       to popularize Chinese language worldwide, lots of Confucius colleges have appeared in foreign universities.