Useful tips: (suitable for all questions)
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Make it NATURAL, pauses, such as "well", "urn", and "you know", are advisable, but don't do it too much.
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CORRECT your mistakes as soon as you find out, for example, "... I really like standing in, I mean, ON the mountain,"(I know it's a bad example. What I'm trying to clarify is that it is OK to make mistakes, but you gotta correct it once you made it.) so the examiner would not count down your score.
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There is NO NEED to use freaking words, like "exonerate", which means absolve, and "flamboyant", which means showy. But those words are good to use in your essay.
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"The FIRST way, the LAST way, the NEVER FAILING way to develop self-confidence in speaking is-TO SPEAK."??????? -Dale Carnegie

Independent speaking (Question 1 & 2)

In this section, you are asked to present your own opinion and provide examples to support your ideas.

Useful tips:
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Your answer should he as SPECIFIC as possible. You need to stick to a point UNTIL you finish it, have done with it, and need never return to it again.
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The key to score high is to make each point WELL-DEVELOPED, and that DOES NOT mean you need to make as much points as you can, two would be great.
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Truth and REASONABLE LIES are totally acceptable.
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"DO NOT say "I have three (or whatever) reasons to support my idea", or some thing like that after you state your opinion. There is no guarantee that you are able to finish your answer within 45 seconds. Instead, you can say "I have a couple of reasons to say."

Question 1

Your answer can go like this:

"Personally, I would have to say that, um, my favorite ... is .... And there are a couple of reasons to name. The most important thing is that, you know,.... What's more,.... So that's why...."

Question 2

Your answer can go like this:

"Well, in my opinion, I would definitely agree with the point that, um,.... The first reason that I wanna say is that.... More importantly,.... So, uh, that's why I choose ... for the two reasons listed above."

Integrated speaking (Question 3, 4, 5 & 6)

In this part, you are asked to paraphrase the man/woman's attitude first, and then list the reasons s/he gives. In QUESTION 3, you are NOT asked to present your opinion towards this problem. However, in QUESTION 5, you REALLY need to make a choice between the solutions that the man/woman gives.