Answer:
The children sailed paper boats before dinner. 
Mothers call the children inside when dinner is ready. 
She fell while she was playing and injured her knee.
Explanation:
Prepositional phrases are composed at least of a preposition and an object. 
The word 'when' used as a conjunction means 'at the time that', and is followed by a subordinate clause. 
The word 'while' is used to connect two events occurring at the same time, and is followed by a subordinate clause. 
 
        
             
        
        
        
Hello. Although you showed the book to which the question refers, you did not say which incident the question refers to, as there are many incidents covered in the book. This makes it impossible for your question to be answered, but I will try to help in the best possible way.
The main factor that points to the transition from old forms of war to new forms of war during the first world war was the use of technologies, mainly those driven by the industrial revolution, which gave the army a warlike power never seen before and allowed each army had access to fighter planes, tanks, submarines, toxic gases and others that did not exist in previous wars and that caused much greater destruction.
 
        
             
        
        
        
surrealism, freedom and captivity, torture. 
 i hope that helps, sorry if it doesnt.
 
        
             
        
        
        
Khalil’s shooting and the ongoing investigation of Officer Cruise put the theme of injustice at the forefront of the novel. The fact that Khalil was unarmed and did not threaten the officer makes his murder unjust. The police are unjust at other points, too, such as when they force Maverick to the ground and pat him down. Race is tied into this theme of injustice as well, since pervasive racism prevents African-Americans from obtaining justice. Starr and Maverick in particular are focused on bringing justice not only for Khalil but also for African-Americans and other oppressed groups, such as the poor. The activist group that Starr joins is called Just Us for Justice because it fights against police maltreatment on the basis of race. At the end of the novel, Starr accepts that injustice might continue but reinforces her determination to fight against it.
        
                    
             
        
        
        
The use of the first person in <em>The raven </em>enhances the emotion and suspense because the narrator explains his fears as he experiences terror.
Although it may seem unrelatable if read lightly, the pom talks about topics such as loneliness and lost, topics which we all can relate to in one way or another, just maybe not in this 19th century prose which we are not used to nowadays.