1. Having interests in common brought Mary and Bob together initially
in common = similar
2. The new terminal which is under construction will be finished next year
under construction = being built
3. Corporal Green was killed on the eve of armistice
4. Tourists often go to the British Museum but most Londoners only go once in the blue moon
5. One night Jack arrived at my flat out of the blue
6. Her new hair style does wonders for her
7. He must have followed you home, or else he wouldn't know where you live
8. The cost of the repairs to the house was in region of $50
9. I was supposed to pick Jane up from the station but I completely forgot about it
10. You should not make fun of him. He seems to be prim and proper