【B20】
A. amazed
B. amazing
C. amazingly
D. amazement
The tool for tattoo-making penetrates the skin ______.
A. by one million meters
B. by one centimeter
C. by one millimeter
D. by a million millimeters
【B6】
A. took
B. brought
C. fetched
D. sent
【B14】
A. however
B. therefore
C. nevertheless
D. whereupon