If the boy had _____ the dog alone it wouldn't have bitten him.
He tried his best to solve the problem, _______difficult it was.A. however B. no matterC. whatever D although
I'm moving to the countryside because the air there is much fresher than________ in the city.
She said she was in great need of such a table and asked me how much _____ table would cost.
The two researchers originally set out to study the zebras in Africa and discovered a new species of tiger _______.
The villagers are extremely thankful to him, without whose help the road to the village ________.