31.   Alice had been so deep in thought that she had walked past her car without even seeing it.

32.   They were so deep in conversation that they barely noticed me.

33.   I stood three feet deep in the water.

34.   I am deep in debt.

35.   You can get some downright peculiar tucker deep in the outback.

36.   He turned a corner deep in thought and saw Dobson and his mob spread out across the pavement.

37.   When they got to the door Robert looked over his shoulder at Rafiq, but the engineering master was still deep in his magazine.

38.   For a while he appeared deep in thought.

39.   The Greek was deep in a dramatic tale of misadventure.

40.   A hard staring uncompromising young man, her son, stands waist deep in the river, the glassy water covering his genitals.