请仔细阅读Mr. Smith对Sam说的话，从A、B、C、D中找出可以替换1—4小题中划线部分的选项, 并完成第5小题。 A. be more patient         B. be yourself C. understand             D. no chance 小题1:“Sam, you’re usually so outgoing and friendly. Don’t be afraid to show your true colors .” 小题2:“If you get the picture . Please do it again.” Mr. Smith. 小题3:“ Keep your shirt on and don’t be nervous. They’ll be here before the class starts.” 小题4:“Sam, don’t be so confident. We will have a fat chance to pass the test.” 小题5:What’s the relationship between Mr. Smith and Sam? A．Father and son. B．Doctor and patient. C．Teacher and student. D．Driver and passenger.