Some students like to take classes early in the morning. Others prefer having classes later in the day. Which time of day is better for you and why? Include details and examples in your explanation.

Yes, but you can practice and make the time under control. for example, for Q1/Q2, Try this pattern:

first 1-2 sentences: introduction. my opinion: A or B. agree or disagree. about 5-10 seconds

First, reason 1 (1 sentence) + why reason 1 (some arguments. 1-2 sentence) + a small conclusion for reason 1(like advantages of reason 1 or comparisons if not reason 1, 1-2 sentence). // about 15 seconds

Second, reason 2 (1 sentence) + why reason 2 (some arguments. 1-2 sentence) + a small conclusion for reason 2(like advantages of reason 2 or comparisons if not reason 2, 1-2 sentence). // about 15 seconds

Conclusion: Don't need a conclusion. (you can have one only when you don't have something to talk about)
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Follow this pattern by putting a clock beside you. After a while, you can get rid of clock and can still talk well.