If you still can't finish writing after more than 45 minutes, give up decisively and write big questions directly.
If you choose, don't worry about calculating the answer from the question. Sometimes you can get the result quickly by directly bringing the answer to the question.
There is also a law of college entrance examination, that is, 12 multiple-choice questions. Generally speaking, ABCD will assign three questions on average, which means there will be three A's, three B's, three C's and three D's in the answers ... but it doesn't mean that it will be like this every time. There can't be five B's or C's, there will be four duplicate options.
The first two questions in the fill-in-the-blank will not be too difficult, so you can start practicing.
If there is really not enough time, then the last multiple-choice question and fill-in-the-blank question can be given up directly.
The math exam is also a multiple-choice exam. Don't dwell on the topic of impossibility. It is king to write down what you can do and what you can get.