题目内容
介词、副词填空
He tried to speed _____ the car, but it was impossible, for it was too old and it could only run _____ a speed of 30 km an hour.
答案：up;at
练习册系列答案
相关题目
题目内容
介词、副词填空
He tried to speed _____ the car, but it was impossible, for it was too old and it could only run _____ a speed of 30 km an hour.