1) Children should be seen and not heard. 

2) We heard the calling of the bells to prayer.

3) I'm amazed you've never heard of the Rolling Stones.

4) I heard someone walk down the stairway.

5) Loud protests were heard when the decision was announced.

6) I heard a sharp intake of breath behind me.

7) I heard the typewriter clacking in the next office.

8) I heard a girl squeal in that room.

9) I heard stories of gruesome tortures in prisons.

10) I think I heard something.

11) The whole table heard what he said.

12) I first heard of it yesterday.

13) I haven't heard owt about it.

14) I heard of his death last week.

15) I've never heard such a load of garbage!

16) She passed out when she heard the tragic news.

17) She heard Tom exchanging good-natured banter with Jane.

18) I haven't heard from him since last January.

19) That's the first I've heard of it.

20) We heard them coming and coming on jump,(http://sentencedict.com/heard.html) too.

21) I've heard enough about it already.

22) She heard him turn on the shower.

23) Have you heard the latest news?

24) He wept when he heard the sad news.

25) I heard it might rain.

26) We heard of his implication in a conspiracy.

27) I've heard the story before.

28) I heard the wail of a police siren.

29) I heard a scurry of footsteps.

30) If you wish to lower yourselfin a person's favor, one good way is to tell his story over again, the way we heard it.