从A、B、C和D四个选项中， 选出可以填入空白处的最佳选项， 并在答题纸上将选项标号涂黑。
1. In Japan, _____ private car is ______ popular means of transportation.
A. the; a B. a; the C. the; the D. the; /
2. After graduation from high school we will reach a point _________ we have to decide which university to attend.
A. that B. what C. which D. where
3. What we need is a patient teacher, __________ who listens to us students.
A. he B. one C. the one D. that
4. My brother likes eating very much but he isn’t very ____ about the food he eats.
A. careful B. cautious C. particular D. generous
