Please choose the correct ending to complete the given sentence: Assembling bicycle: She then shows another saddle and demonstrates how to tighten the bolts to adjust the level of the saddle. she

Ending1: shows how to tighten the bolt to make sure the saddle fits snugly. Ending2: pins a broken loose bolt and warms up by donning a helmet. Ending3: also shows the tall fir trees, the bushes and the leaf blower can be used to remove the leaves. Ending4: then shows around again the use of the pommel horse for practice.

Answer format: ending1/ending2/ending3/ending4