Please choose the correct ending to complete the given sentence: Work World: [header] How to work in a greenhouse [title] Complete your high school education. [step] If you want a job in a greenhouse, you'll need to have at least a high school diploma. If you're still in high school, there are subjects you can pick while in high school that will improve your employability.

Ending1: Biology and chemistry courses will get you prepared for working with plants and pesticides. [title] Consider a two-year technical program. Ending2: [substeps] Attend a study group if your school offers these classes. Get involved in your classes, even if it's just a silly catch up, like gardening or corn learning, to reap the benefits of working in a greenhouse. Ending3: After you graduate, consider looking into classes that will improve your cooking, physics, and even computer skills. Make sure the subject is relevant to your field or passions. Ending4: Try undergraduate programs or regularly check your eligibility. It's a good idea to schedule classes first, which can help you study sooner.

Answer format: ending1/ending2/ending3/ending4