某储户2002年5月1日存入银行定期存款1000元，存期一年，假设存入时该档次存款年利率为3%，该储户于2003年6月1日才支取这笔存款，若支取日挂牌公告的活期储蓄存款年利率为1.89%（不考虑利息税）。回答下列问题：

该储户一年到期的利息为（）。

A.18.90元

B.30元

C.24.45元

D.32.50元

用所给单词的适当形式填空。

1. The children were ________ because they didn't get Christmas presents. (happy)

2. How can you make yourself ________ if you cannot express yourself clearly? (understand)

3. December is the _______ month of the year. (twelve) 

4. The doctor's ________ made all of them sad. (dead)

5. I think this dictionary is ________ for your study. (help)