English Pronunciation - Answers to Silent Letters Quiz

Here are the answers to yesterday's post and some rules on silent letters. 

1. autumn -  N is not pronounced at the end of a word after M
2. foreign - G is not usually pronounced before N
3. calm - L is usually not pronounced before D, F, K, M (half, would)
4. hour - H is sometimes not pronounced at the beginning of a word. Use "an". Other words are honour, heir, honest. 
5. history - No silent letter. The H is pronounced here. 
6. knife - N is not pronounced after K
7. sandwich - (Actually pronounced samwich) D is sometimes not pronounced in the middle of a word, as in Wednesday and handkerchief. 
8. thorough - GH is not usually pronounced before a T, and sometimes not at the end of a word.
9. muscle - C is not pronounced in the ending -SCLE
10. salmon - the same as 3.
11. island - S is not pronounced before L in island and isle.
12. castle - T is not pronounced in these common words: Christmas, castle, listen, whistle, thistle, fasten, often
13. receipt - P is not usually pronounced in a word ending -PT
14. debt - Like 13. but with -BT. 
15. write - W is not pronounced when a word begins with WR-
16. who - who, whose and whom have a silent W
17. ghost - H is not pronounced when a word begins with GH-
18. psychologist - Any words starting with PSY- have a silent P
19. herb / herb - This one depends! British speakers say the H, Americans don't. You can choose whichever is easier. 
20. pneumonia - P is not pronounced before N at the beginning of a word.