1/Thoseexcitedchildrenwelcomedthegueststotheirschool,[jumpingandshouting]为什么用ing形式啊?2/Thepoorman,(tiredandfrightened,)ranoutofthedarkcave.这里为什么用ed形式啊?3/Though(lacking)time,hemanagedto
1/Thoseexcitedchildrenwelcomedthegueststotheirschool,[jumpingandshouting]
为什么用ing形式啊?
2/Thepoorman,(tiredandfrightened,)ranoutofthedarkcave.
这里为什么用ed形式啊?
3/Though(lacking)time,hemanagedtofinishthetaskontime.
这里为什么用lack的ing形式啊?
请标明题号说清楚,