He always works hard, but__________, he didn't pass the exam.
We don't know that plan __________ by the teacher is __________ three parts.
Once new difficulties __________ in your work, it's always important to use your brains.
-What is the price of petrol these days? -Oh, it __________ sharply since last month.
Finally the English government tried in the early twentieth century to form the UK by getting Ireland __________ in the same peaceful way.
In my opinion, an organization should be set up to study the __________ a child's personality and his living environment.