Was it at the Olympic Games ______ were held this year ______ Liu Xiang got a metal?

The shy girl felt ______ and uncomfortable when shecould not answer her teacher’s questions.

One theory this phenomenon acupuncture reduces pain suggests that acupuncture_____ pain signals from reaching the brain.

He was about to jump into the river ________ his mother stopped him.[ ]

News reports say peace talks between the two sides _____with no agreement reached.[ ]