I was pressed for time during the exam. I think you'd better read the questions first, then write the answers on paper and fill in the answer sheet between the next questions. It doesn't matter if you don't hear the first few words. . .
After the overall answer, quickly check the answer sheet. It won't take long. If you don't have a few seconds, you can skip the check.
In my opinion, you can do the questions and practice at the standard time before the exam.