2．
1.太阳使地球暖起来，这使植物生长有了可能。
The sun heats the earth, which ___________ ___________
___________ for plants to grow.
2.只有当他离开学校后才意识到教育的重要性。
_________ after he left school _________ _________
_________ the importance of education.
3.当汤姆知道自己成绩时，他后悔没有听从老师的建议。
When Tom knew his own scores, he _________ _________
_________ followed his teacher's advice.
4.I have the encouragement to overcome the difficulty
because of your encouragement.
_________ _________ your encouragement, I have the
encouragement to overcome the difficulty.
5.Our new teaching building is three times the height
of the old one.
Our new teaching building is three times _________
_________ _________ the old one.