The government should __________ a law to make computer hacking illegal.          a. allow b. enter c. pass d. bring

The researchers ____________ many experiments to find the most effective materials.           a. considered    b. confirmed         c. concerned      d. conducted

We all need to _________ responsibility for improving our local community. a. have b. make c. take d. give.

Bad weather __________ the flight for several times.              a. postponed b. delayed c. cancelled d. stopped

When I was 12, my father taught me how to ______ chess.  a. do   b. play   c. make  d. collect

Many people believe that violent computer games can have a harmful __________ on children. a. effect b. affect c. damage d. involvement

Everyone knew Samnang had ___________ a crime, but nobody wanted to tell the police. a. committed b. done c. made d. performed

It’s important to set yourself clear _________, so you know what you are aiming for. a. ambitious b. opportunities c. decisions d. goals