Điền từ vào chỗ trống

      1.   You should ……………… others how to recycle things to protect environment.

      2.   He ……………… the driving test already.

      3.   Sometimes we take part in charity work to …………… the poor with food and money.

      4.   They ……………… their house in the city last month.

      5.   I ……………… a letter to Paul recently.

      6.   The children ……………… all their money on computer games.

      7.   He ……………… the race.

      8.   We ……………… a lot of trees to make the environment fresh.