76. The city is an important railroad __ and industrial and convention center.
A. conjunction
B. network
C. junction
D. link
77. A qualified teacher should have good manners and __ knowledge.
A. extensive
B. expansive
C. intensive
D. expensive
78. It is reported that many people were hurt when the two buses
A. bumped
B. crashed
C. collided
D. struck
79. Californians and New Englanders speak the same language and __ by the same federal laws.
A. stand
B. conform
C. abide
D. sustain
80. The meeting was ___ over by the mayor to discuss the tax raise in the city.
A. presumed
B. propelled
C. presided
D. pricked