He tried his best to solve the problem, _______difficult it was.A. however B. no matterC. whatever D although
The soldier rushed into the cave, his right hand _____ a gun and his face _____ with sweat.
The war was the result of their _____ for more land.
The huge picture looks more beautiful _____ the blue sky.
Ms. Claire is a strict but kind teacher, _____ I respect and appreciate most.
There is a small group of English words which even some native speakers and writers find _____.