1. She clammed up whenever I mentioned her husband.

2. A sensitive child is likely just to clam up.

3. The pedlar clammed up when I mentioned the police.

4. As soon as I told her my name, she clammed up.

5. He always clams up when we ask about his family.

6. He just clams up if you ask him about his childhood.

7. He always clammed up when we asked him about his family.

8. The teacher asked who had thrown the eraser,but the class clammed up.

9. But he clammed up right after that.

10. Normally she would have clammed up at that juncture.

11. No wonder he clammed up whenever I asked him about his childhood.

12. They clammed up like leeches when anything about Therese came up.

13. He'd noted that Howard had clammed up as the new arrival appeared.

14. We had gone over his script over and over and he knew it cold(http://), but he almost clammed up.

15. He always clams up when I ask him about his job -- do you think he's doing something illegal?

16. The police took her in for questioning, but she clammed up when they asked about her boyfriend.

17. Will you clam up! The boss is talking.

18. You should not clam up on him.

19. After giving your price, clam up.

20. You can't talk with those peasants. They can clam up as well as the Foreign Office.

21. They are afraid he's going to clam up on them.

22. It'started off well, but he seemed to clam up towards the end.

23. You can't clam up. And you don and stammer. So what's a job seeker to do?

24. Normally chatty Mckinsey partners clam up when asked about the race.

25. Don't clam up just when the story is getting interesting.

26. Beggars can't be choosers. You need to just clam up.

27. The secret for successful marriage is to clam up during a disagreement.

28. Hey, clam up, will you! I've heard already about how hard you work in the office!

29. Both Noland and Hull showed the good taste to clam up while the Symington trial is still under way.

30. I do not mean to pry, so there's no need to clam up on me.

31. Whenever Bev walked by, Roy got so nervous he would just clam up.

32. The hit singles and No 1 album have, evidently, not made her clam up for fear of adverse publicity.