写出下列形容词的比较级和最高级。
1．hungry ________ ________
2．ill ________ ________
3．little ________ ________
4．busy ________ ________
5．red ________ ________
根据句意用括号中所给的单词的同义词(组)或近义词(组)填空。
Plant ________ ________ water．(needs)
These children are in good health．They are ________ ill．(hardly ever)
A CD-ROM can hold ________ 300,000 pages of writing, and can also contain pictures and sound．(more than)
This bottle ________ one liter．(holds)．
We didn't ________ what they really meant．(understand)
Peter is ________ late．(seldom)
The answer to this question is, ________‘Yes’．(at present)
We need a ________ to help us．(person)
按要求改写句子，每空一词
The little boy was so brave that he caught the thief by himself．(保持句意基本不变)
The little boy was ________ ________ to catch the thief by himself．