It is quite an informal party; you needn’t        for it.

British Prime Minister Gordon Brown was born and ______in Kirkcaldy, a small coastal town north of Edinburgh in Scotland.

The numbers that researchers get from the experiments can be _______, just like number puzzles.

—Did you have a chat with Tom?—No, I was trying to ________ an opportunity to do so, but I couldn't.

 Boss ___ us taking some days off to get refreshed after so many days of hard work.