"Do you know ________ " "His father is a doctor."
48. _____ and butter ____ the daily food in west countries.
49. ____ and friends should be few but good. (prov.)
50. John is on the bottle again. This sentence probably means _____.
51. --- Who is at the _____ of all this trouble. --- I don’t know.
52. I shall walk with you to the bottom of the road. The underlined part means ____.