问题
He sometimes goes to school_______ underground, but sometimes he _______ a bus.
A:by, on a
B:y
C:by an, on
D:by; takes;
B:y
C:by an, on
D:by; takes;
正确答案是：
同类题型
Beijing was attacked by such a terrible sandstorm ______few citizens had ever experienced before.
Who do you think is the right person to ______the task?
Look! Some boys are playing baseball, ________ arechasing, they all have fun.
Please______the numbers and I’m sure they will ______more than 2000.