用方框中所给词语的适当形式填空。每词限用一次。

well，ill，proud，sleep，discover

（1）My sister won the competition yesterday.We are

proud

proud

of her.
（2）You'd better not go to bed late，or you'll feel

sleepy

sleepy

tomorrow.
（3）Jenny can't go to school because she has got a serious

illness

illness

.
（4）Scientists haven't

discovered

discovered

life outside the earth yet.
（5）--How is my grandfather，doctor？
       --

Well

Well

.