16 We need to develop a sound business plan.
17 The entire valley reverberated with the sound of the temple bells.
18 Short sound waves bounce off even small objects.
19 A cassette tape recorder can easily record sound on and play sound back from tape.
20 We need a big powerful sound from the trumpets in the final passage.
21 The sound of an engine echoed back from the thick forest.
22 The garden was humming with the sound of bees.
23 They could hear the sound of a bell tolling in the distance.
24 The sound of the heavy footsteps awoke the watchdog.
25 He heard the sound of heavy, dragging footsteps in the corridor.
26 Alarmed at the first sound, we hit the dirt.
27 I would, however, sound a note of caution.
28 The engine began to sound very loud indeed.
29 In my opinion and in the opinion of most people, it is a very sound investment.
30 It might sound like some kind of wild fantasy, but it wasn't an erotic experience at all.