第一个:怎么说“it depends." 比如,一个人问你,你会说中文吗?你可以开玩笑,”it depends on" 否能你会给我一个测试。 It depends on whether or not you are going to give me a test. 用要看吗? 要看否能你会给我一个测试。
you can use both 要看 and 取决于. However 取决于 is used in situations which are serious or can cause great consequences. In the case you mentioned above, you can say: 那要看你是不是要想考我了。
第二个:怎么说“show". 比如,我刚刚买了一本书,很高兴。我想”show"给我的朋友新书。我想给我的朋友出示新书,对不对?
给...看... means show sth to sb. in this case you can say. 我想给我的朋友看看我新买的书。出示 means to identify your identity by showing your ID or other documentation in most cases.
Hope it helps, btw. have you been busy lately, barely see you online on skype anymore. Anyway have fun. :-)