单项选择题
Historically, () main material for making tables has been wood, but()metal and stone have also been used.
A. the; 不填 B. 不填; 不填 C. the; the D. 不填; the
单项选择题 Mr. Green drove slowly on the way home until he reached the high way, () the speed limit was 60 miles per hour.
单项选择题 So far, several ships have been reported missing () the coast of Bermuda Island.
单项选择题 Readers () can very smoothly without knowing the exact meaning of each word.
