chapter6

appoint:We appoint Susan as our group leader.

astonished:We were all astonished at the unexpected news.

calculate: iPhone can calculates the distance from classroom to dormitory.

challenge:Everyone have a new challenge that improve english more faster.

concept:I have no concept about how to help them to improve language.

drag:Don't drag me.Let me go.

extend:The oil pipeline has been extended another 200 kilometers.

extrme:He was very extreme that he could't sleep all night.

mere:This job is mere that I can finish it in a couple of hours.

passage:When you pass through the passage,you can see it.