Here are the transformations for each sentence:

1. There **are** traffic jams in this street during rush hours, but now the street **has become** wider.
2. Will the plumber check cracks on the water pipes in two days?
-> Will **he** check cracks on the water pipes in two days?
3. People say that he is a good doctor.
-> He **is said** to be a good doctor.
4. Old car tires are recycled to make shoes and sandals.
-> People **recycle** old car tires to make shoes and sandals.
5. It was such an interesting film that we watched it several times.
-> The film **was so interesting that** we watched it several times.

Feel free to ask if you need further assistance!