要不是他们的帮助,我们是克服不了这些困难的。(but for)_____________________________________________
--Was it two months ago_____you luckily got an opportunity to spend your holiday in Hawaii?--____________. John was the lucky dog.
We can’t wait. We have to_________ the direction and the distance before we take action.
Don’t you know that the famous university is as a matter of fact _________used to be a church?
_________ the car after drinking alcohol, there wouldn’t have been the accident.
His family was poor, but his parents _________to send him to a key middle school where he felt happy and did quite well.