Answer:
1. The children were doing their homework when their father came back from the office.
2. He was playing the guitar when someone opened the window and threw out a bucket of water.
C because after being active your body gets used to the exercise so your body makes higher energy levels
A broken relationship can be fixed if the right channels of communication are provided. In case the author wants to show his or her friends that there is a possiblility to mend things, the bridge between them would be the best object to simbolize the means to work out the broken relationship. Figuratively, the bridge can create the path which will take each part to the other side to overcome past difficulties. The right option is C.