I bought a picture. It was very valuable (a relative word)
5- I bought a picture. It was very valuable. (a relative word)
6-These shoes are of excellent quality. They are produced in that factory. (a relative word)
7- The highest building is on Nguyen the street. It was built in 2002. (a to infinitive)
8- Mary is the only girl. She always brings me joys. (a to infinitive )
9- The children are very nice. They live next door. (a participle)
10- We stopped to swim in a small river. It looked very clean. (a participle)