1) _____ , we stand; _____, we fall. 　
　 A) Uniting, dividing
　 B) United, divided
　 C) To unite, to divide
　 D) To be united, to be divided

2) The thief got off the bus _____. 
　 A) unnoticed
　 B) not noticing
　 C) to be unnoticed
　 D) unnoticing

3) _____ in the city, he knew little about farm work. 
　 A) To be born and raised
　 B) Being born and raised
　 C) Born and raised
　 D) Having born and raised

4) Although _____ by the long walk, he continued his journey. 
　 A) exhausting
　 B) being exhausted
　 C) having exhausted
　 D) exhausted

5) It rained heavily, thus _____ severe flooding in this district. 
　 A) caused
　 B) to cause
　 C) causing　
　 D) being caused

6) Gentlemen always shake hands when _____ to each other. 
　 A) introducing
　 B) introduced
　 C) having introduced
　 D) to be introduced

7) _____ anywhere else, we couldn't have recognized each other. 
　 A) Met
　 B) Meeting
　 C) To meet
　 D) Being met

8) The output of our factory has increased 15% as _____ with that of last year. 
　 A) comparing
　 B) to compare
　 C) being compared
　 D) compared