1.Some of my ____________ are going to my birthday party tonight. (class)  2.Read through the passage and ____________ any words you don’t understand. (line)  3.Our project wouldn’t be successful without your kind ____________. (cooperate)  4.He is the most respected person in my ____________. (neighbor)  5.Why do we have to put all ____________ objects out of children’s reach? (danger)  6.You don’t have to ____________ the grammar rules to be able to do these exercises. (memory)  7.There should be a law to prevent ____________ to animals. (cruel)  8.Her father is doing a ____________ experiment. (chemist)  9.Tom is working as an ____________ to Professor Brown. (assist)  10.My mother was the ____________ of my brother’s birthday party. (organize)  11.Be careful to cover the ____________ sockets for the safety of the children. (electric)  12.We enjoyed listening to some ____________ folk songs when we were in Hue. (tradition)  13.You can buy sports ____________ at the store over there. (equip)  14.The thief ____________ before the police arrived. (appear)  15.Every ____________ in my village has at least one TV set. (house)