3 He was delighted to receive his aunt's letter
->He was delighted that he received his aunt's letter.
4 Old car tires are recycled to make shoes and sandals
->People recycle old car tires to make shoes and sandals
5 I'm very sad that I wasn't accepted in that group
-> I'm very sad not to be accepted in that group
6 Tam doesn't type as fast as she used she used to.
->Tam used to type faster than now