51.   With another frown, she took a step back.

52.   You should take active steps towards reducing stress.

53.   Hannah took a step backward.

54.   The government took another step on the road to political reform.

55.   She took a step nearer to the barrier.

56.   I took a step towards him.

57.   Space scientists and astronomers have taken another step forwards.

58.   He took two steps backward.

59.   The child took five steps, and then sat down with a bump.