问题详情：
根据句意，写出括号内所给单词的适当形式。
1. After discussing for two hours, one of the most important ____________ (decide) was
made.
2. We ____________ (simple) couldn’t wait for the first lesson given by Dong Qing.
3. Susan is an even ____________ (lively) girl loved by everyone.
4. We got excited when we ____________ (success) in working out the difficult problem.
【回答】
1. decisions 2. simply 3. livelier 4. succeeded
知识点：构词法
题型：完成句子
