Sentence 1: Last week I made Gnocchi for my girlfriend. 
 Sentence 3: I am not a good cook, so I spent a few hours learning how to make it 
 Sentence 4:  It was difficult, but my girlfriend was so appreciative 
 Sentence 5:  The look on her face made all of the stress work it 
 Given Sentence 2: He gathered his friends to help clean up the ocean.