31.   The hotel staff made sure nothing disturbed our comfort or enjoyment.

32.   Then he paused, made sure I was looking, before gravely he removed the cloth.

33.   Then plan to increase this rate to make sure of reaching the final approach point at the desired height.

34.   There is a case for government intervention to make sure Marginal social cost and Marginal social benefit are equated.

35.   They have posted guards at every door to make sure no one enters the building.

36.   When you first tune a station frequency, check the identification twice to make sure you have the right beacon.

37.   With time to spare, the Age Bulgers dominated all levels of politics and made sure their special interests came first.

38.   Joe went after her to make sure she was unhurt.

39.   Each morning cleaners make sure everything is spotless.

40.   Looking round to make sure he was unobserved, he slipped through the door.