I. 根据所给的首字母及句意写出所缺单词的完整形式。
1. In order to make a b________ summary (总结), he had to listen to the lecture carefully all the time.
2. The customer asked for help for several times, but to his surprise, the waiters didn’t r________.
3. Kiddy and Mary are good friends. They have many c________ hobbies.
4. After searching the house for a whole day, the police at last found some v_________ things.
