Can you clarify your topic?You mean to choose one of these above to give a speech,or a combination of them. Plus ,the last one,shouldn't it be "think of"?
Some more information ,please, it might help me to offer you presicely what you want~and, is this for a high school spoken English test? or even junior high school~don't tell me you're a primary school stutent..To be honest, it's better for you to accomplish this test on your own, this shall benifit you more or less~