1 It is necessary to brush your teeth before you go to bed
=) You need................................................................
2 Because it rained heavily, we canced the match.
=) It rained...............................................................
3 Hoa said that she was reading a scince fiction book about life on other planets then.
=) Hoa said ..................................................................
4 I will give him your letter when I see him tomrrow.
=) As soonas...............................................................
5 These are thier new rooms. 
=) These new............................................................
6