根据汉语提示,完成句子。 1. The first snow of 2010 was heavy and had a huge _______ (影响) on our lives. 2. Jack has _______ (后悔) that he spent too much time on playing computer games. 3. Air pollution may cause _______ (呼吸) problems. 4. What we have seen in the countryside these days will be _______ (难忘的). 5. We usually have a class meeting on _______ (星期三). 6. Premier (总理) Wen Jiabao wrote 'Much Distress Regenerates a Nation' (多难兴邦) on the blackboard in Beichuan Middle School to ______ (鼓励) the students to study hard.