词汇
根据句意或括号中的中文提示英文解释写出句中所缺单词，使句子通顺。
It is possible that the boy isn’t telling the ___________ （事实）.
Our English teacher is kind but very ___________ （严格的）with our study.
The teacher didn’t let me sit down until he was _________ (pleased, happy)with my answer.
The sweet music helped him feel __________ ( calm and not worried ).
Please don’t be ______  . You shouldn’t give up easily.