小狗兴奋地在草地上欢快地跑来跑去。
The puppy ___scampered playfully across the grass.
小狗在花园里欢快地跑来跑去。
The puppy was ___scampering around the garden happily.
小狗在草地上欢快地跑来跑去。
The puppy ___scampers across the grass happily.
浙公网安备33010902004675号