Tom said he got up early to do all his chores. In a pig’s eye, he did.（）

单项选择题Thomas Edison provided valuable wealth for the modern world because （）.

A．he never let any time slip by
B．he always thought and planned
C．he always tapped out messages without stopping

单项选择题A factor in the unpleasantness of traveling may be （）.

A. time zones
B. natural light
C. protection
D. discomfort
E. cost
F. essentials
G. motion sickness