Man _______a battle against pollution at once. A: must start fighting B: had to start to fight C: is starting fighting D: is beginning fighting
Man _______a battle against pollution at once. A: must start fighting B: had to start to fight C: is starting fighting D: is beginning fighting
Stop fighting, boys.
Stop fighting, boys.
Though sea water is the best mode of fighting fire, the main emergency fire fighting system can only be used on fires of ________.
Though sea water is the best mode of fighting fire, the main emergency fire fighting system can only be used on fires of ________.
Beowulf was wounded while fighting with______ and then died.
Beowulf was wounded while fighting with______ and then died.
Fighting a fire in the galley poses the additional threat of（）.
Fighting a fire in the galley poses the additional threat of（）.
The Spring and Autumn Period witnessed the fighting between
The Spring and Autumn Period witnessed the fighting between
Henry sincerely believed that he was fighting a ________ war.
Henry sincerely believed that he was fighting a ________ war.
Animals spend much of their life fighting for.
Animals spend much of their life fighting for.
Fierce fighting broke out between the（ ）groups.
Fierce fighting broke out between the（ ）groups.
Animals spend much of their life fighting for ___________ (survive).
Animals spend much of their life fighting for ___________ (survive).