根据句意、汉语或音标提示，写出单词的正确形式，每空一词。
Tommy is an        (诚实的) boy, so I believe him.
After two hours of hiking, we        (最后) got to the camp.
They looked at each other for a        ([waIl]) and then laughed.
The manager wants to open up new        (市场) in the USA.
Our Physics teacher asked, “Which comes first,      (闪电) or thunder?”