根据句意和语境，用所给词的适当形成填空。

1．Some of the          (win)at the sports meeting are from our school．

2．Which river is          (long)，the Yangtze River or the Yellow River?

3．I have been to the West Lake          (two)．

4．His friend’s          (die)made him feel sad．

5．How long          you         (borrow) the book from the library?