Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to address clasp envelopes [title] Consider an adhesive label. [step] If the clasp on your envelope makes it difficult to write legibly, think about purchasing a sticky address label from a post office or stationary store. You can write on the label on a flat surface, then peel it off and fix it onto the envelope.

Ending1: Adhesive labels are available at post office or stationary stores. These labels allow the envelope's adhesive to help hold it together while it's sealed. Ending2: Write the label on the back, then put it back on the envelope. [title] Glue the letter around the mailhouse. Ending3: This will make writing legible to the recipient. [substeps] You can also design your own address label. Ending4: If you decide to write directly on the envelope, just continue to the next step. [substeps] The return address label should be smaller than the main address label.

Answer format: ending1/ending2/ending3/ending4