31.
A well behaved boy is always obedient towards his parents.

32.
Who do you think I was talking over the phone when you came to see me.

33.
They could not complete the work; neither could we.

34.
He shouted that he might attract attention.

35.
You will fail in the examination if you will not work hard.

36.
You should not discuss about a matter with friends who are likely to find it offensive.

37.
Students must give ears to what the teacher says.

38.
When the clock strikes twelve, I shall be waiting here for four hours.

39.
If you ask nicely, your sister will probably allow you have a piece of cake.

40.
His idea of reducing the quality of the article to cope up with the increasing market prices was not listened to.