Yu-quian,

You should consider adding more specific details to your answers to make it meet the requirements of 30 seconds.

Also, please check out the following website concerning the usage of "prepare."

http://www.ldoceonline.com/dictionary/prepare

Consider the following answer.

To prepare for an important exam, I usually make a review plan two weeks beforehand.

I usually start by reviewing the textbook and follow by doing some practices.

Through doing the practices on workbooks, I get the chance to clarify the confusing points.

I often discuss those confusing points with my classmates or teachers.

On the night before the exam, I ......

That's how I prepare for an important exam.

Ying-chu,

You should add more details to your statemnet.

This is a 30-second question.

Check out what I've suggested Lily, Wen-chi, Yi-xin and others.

Here are some specific suggestions for your answer.

I often start preparing for it one week before the exam arrives.

I usually come up with a schedule to help me review.

I would arrange the time for each subject according to my learning performance.

I usually do more practices on my weakest subject.

When I come across some questions that I can't solve on my own, I would ask my classmates or teachers.

This is how I usually prepare for an important exam.

Yi-chun,

Please read through what I suggested Lily, Yi-Xin and Wen-chi.

Your answer need more elaborations.

You might also want to change what you said above.

To prepare for important exams, I usually have a review plan.

The plan starts as early as two or three weeks before the exam arrives.

I stick to my schedule and fully prepare for the exams by reading through the textbooks and doing practices on workbook.

Whenever I encounter some questions, I would ........

............

That's how I usually prepare for important exams.

Fang-yi,

You can try to be more specific in your statement and add more details to it.

Please see what I have suggested to Yi-Xin.

You should try to tell the audience what you meant by studying hard.

Yi-xin,

Same issue on this response.

You will need to add more details to make your answer fufill the 30-second requirement.

Please consider the followng answer.

To prepare for an important exam, I usually start two weeks ahead before the exam comes.

I usually review what has been covered in class first and read my notes.

After that, I do some practices on the workbook.

On the night before the exam, I don't cram but make sure I have a nice sleep and get all the stationeries ready for the exam held the next day.

I always try to be in good spirit on the test date so that I can focus on the exam.

And hopefully, I would pass the exam with flying colors.

That's how I usually prepare for important exams.

Lily,

Pay attentioin to the following red marks.

I usually start to prepare for an important exam two weeks beforehand. First, I would review the textbooks thouroughly. Second, I go over the notes that I took in class. Third, I close the books, put away the materials, and write down the key points of each chapter. And finally, I read some reference books and do some practices.

Wen-chi,