Sentence Structure
The problem was not difficult to solve. No one wanted to sort it out. (Make it as a complex sentence)
Although the problem was not difficult to solve, no one wanted to sort it out.
Yesterday I went out with Tom. Tom is a friend from high school. (Make it as a complex sentence)
Yesterday I went out with Tom, who is a friend from high school.
Let's go to the theater. We will go after lunch. (Make it as a simple sentence)
Let's go to the theater after lunch.