用所给单词的正确形式填空。

1. Yesterday he didn't feel well and _________ (lie) on bed for a whole day.

2. Lisa is preparing for the ______ (finally) exam in her bedroom.

3. We are all surprised at his _______ (suddenly) change of mind.

4. Listen! Jerry's dogs start ______ (bark) again.

5. When I went out of the classroom, I _______ (lock) the door.