-He sat at the table and started staring at the exam paper.
-He ran to the park and started playing on the sand
-They jumped on the table and started singing and dancing
-She stararted learning and ended up at the TV
-She was walking while talking with her friend
-They were eating their meal while they were watching TV
-She did her project while she was in the plane
-He was playing while studying at science
-She was sleeping while the robbery happened
-He was learning when the computer stopped working
-They were running when she felt and broke her leg
-I was crying when my hed started hurting