1. There must be some .........; I think we have come to the wrong house.

2. The train crash was due to a ......... of the engine-driver, and many people died because of his carelessness.

3. You shouldn't worry about this; it was only a ......... of the tongue and no one really noticed.

4. I am telling you from personal experience — don't go there on holiday. It will be a(n) .........!

5. All the information was lost because of an ......... in the computers.

6. He paid a lot of money for the high quality machinery, but a lot of technical ......... started to appear in the long run.

7. It is the first time Jason has written a love letter, so no wonder he made a few ......... of the pen out of excitement.

8. Julia married a wealthy old man when she was only eighteen because all she wanted was to be rich. Years later she realized it was a big ..........

9. At the beginning of our marriage we had some ........., but little by little we smoothed them away.

10. What he did was inappropriate to his social status; as the president of the country, he didn't realize what a(n) ......... he had made.