1,lost in thought,he almost ran into tha car in front of him.
2.founded in 1636,Harvard is one of the most famous universities in the united states.
3.we found the students seated at tables and had their eyes fixed on the scene of the launch of Shenzhou V spaceship.
4.everything taken into considersation,they believed themselves more and returned to their positions.
5.faced with so much trouble,we failed to complete the task on time.