四、词汇(共10分,每小题1分)。
A)根据句子意思,用括号中所给词的正确形式填空,每空填一词。
43. I must tell him the _______ (true) about this business because he will leave here in a minute.
44. He was sent into prison for ________ (steal).
45. Our teachers and parents often warn us to pay attention to ________ (safe).