小题1:I met/saw her on the Great Wall last year.
小题2:I have something interesting to tell you./I have something that is interesting to tell you.
小题3:He gave/left/told me his telephone number when he left/He gave/left/tole his telephone number to me when he left
小题4:Liu Xiang is one of the most popular sports stars in the world.
小题5:Your mother wants to know if/whether you have arrived at/reached school safely.
小题1:last year为去年的含义，故本题使用遇见的过去式met或看见的过去式saw，on the Great Wall表示在长城上的含义，故本题可翻译为I met/saw her on the Great Wall last year.
小题2:something interesting为一些有趣的事，表示目的用动词不定式to tell，故本题可翻译为I have something interesting to tell you.
小题3:把某物留给某人可以写成leave sb sth，his telephone为他的电话号码的含义，when引导时间状语从句，表示当……时候的含义，leave也可以表示离开的含义，本题表示过去，leave的过去式为left，故本题可翻译为He left me his telephone number when he left。
小题4:one of表示其中之一的含义，后跟形容词的最高级和可数名词的复数形式，the most popular表示最受欢迎的意思，sports stars为体育明星的含义，故本题可翻译为Liu Xiang is one of the most popular sports stars in the world.
小题5:want to know表示想知道的含义，后跟宾语从句用if或whether表示是否的含义，后跟句子的正常顺序，arrive at school或reach school表示到达学校的含义，本题表示过去要使用过去的结构形式，安全的单词为safely，修饰动词，故本题可翻译为Your mother wants to know if/whether you have arrived at/reached school safely.