___________ has always been expected, he has finally achieved his dream, ________ makes his parents so proud.

Someone who lacks staying power and perseverance is unlikely to _____ a good researcher. [ ]

If I am free, I’d like to spend _________ holiday in the countryside.

Let’s work out this math problem together,

I think everyone can do something to make a difference to the Earth.-_______. If we work together, we can make the world a better place.