Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to hang sheet metal in your cabinets [title] Lay a straight edge on the bottom shelf of the cabinet. [step] Measure the inside surface of the cabinet, by first laying a straight-edge face flat on the bottom shelf of the cabinet with one end of the straight-edge sticking out of the cabinet a few inches. [substeps] Slowly close the cabinet door until it is lightly touching the straight-edge.

Ending1: After this, cut slits into the top and bottom to prevent sheet metal from sliding through cracks. Discard this gap, leaving the bottom shelf free and the inside " freestanding " part of the cabinet free. Ending2: Mark a pencil mark on the door where it touches the straight-edge. Move the straight-edge over at least a couple of inches and make a second mark. Ending3: Use a hammer to hammer around the edges to close the door. [title] Mark the zipper holes on each inner lip of the cabinet. Ending4: Immediately knock down the cabinet if there is any excess shelves inside it. [title] Measure and cut a strip of lightweight duct tape.

Answer format: ending1/ending2/ending3/ending4