题目内容：

根据句意及首字母提示完成句子。（5分）

1.Tea is an a         invention.

2.Of all the          （参赛者）, Bob was the best and he won the first prize.

3.He m        to finish the work in time with my help.

4.I r         a letter from my pen pal yesterday.

5.Lina, the great tennis player, is the p        of our country.