Little Tom is an orphan. He now feels__________ without his only friend the dog.
They asked many questions ___________ had nothing to do with that topic.
_____________ is necessary __________ he trains himself before the Guangzhou Marathon.
___________ a sportsman is a hard job, but you are very excited if you are successful in ____________a good medal.
---Which do you like ___________ , apples or pears? --- I like pears.
I always go to sleep ___________ the light on.