2.Anxiously waiting for his son to return, the mother walked back and forth along the road.
举一反三
- He was walking ( ) along the corridor. A: back up B: back down C: back and forth D: back of
- The car drove slowly along the back road. It was quite muddy.
- It was named by Silk Road because the silk took a large proportion of the trade along this road.
- I ____along the road when suddenly someone patted me on the shoulder from behind. A: walked B: had walked C: was walking D: would walk
- and with these words he turned his back on me and walked off.