63.Because women often () their diet to control weight, they may not consume enough iron-rich food, and are liable to experience a deficiency.

49.This is the nurse who () to me when I was ill in hospital.

48.He was such a () speaker that he held our attention every minute of the three-hour lecture.

47.Although he had looked through all the reference material on the subject, he still found it hard to understand this point and her explanation only () to his confusion.

46.In the Chinese household, grandparents and other relative play () roles in raising children.

45.Though () in a big city, Peter always prefers to paint the primitive scenes of country life.

44.I’m very sorry to have () you with so many questions on such an occasion.

43.Our hopes () and fell in the same instant.

42.The manager promised to keep me () of how our business was going on.

41.Those acting for the defendant proposed to appeal () the sentence.

40.My camera can be () to take pictures in cloudy or sunny conditions.