Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to be an effective engineering student [title] Go to class. [step] Yes, every class. Falling behind in engineering school is almost impossible to recover from, so don't miss class unless you absolutely have to.

Ending1: If you need to let enough time pass, however, that shouldn't take long. If you leave your class unsupervised, you will likely never be able to focus on work, and will suffer the pain of your slips as a result. Ending2: As you learn more about engineering, look for other courses that you can dedicate time and energy to. That way, you won't be late for any classes and your grades will be better. Ending3: [title] Get into a panic if you don't know what to do. [step] You will not be able to make a good grade if you make a mistake because you are always late and will seriously regret an outcome like beating a pencil sharpener. Ending4: [substeps] Try to never miss a class unless there is a mandatory event you have to go to or you are very sick. Make it a top priority to personalize your class schedule to fit your availability.

Answer format: ending1/ending2/ending3/ending4