Problem: Angela wants to get skinny so they exercise under Carrie's instruction, but

My choice: Angela is a slow learner.

Problem: Aaron was handier than Joseph, so

My choice: Aaron applied the silicone sealant to the bathtub corner.

Problem: Anxiety is difficult for Nick while Lawrence is a social butterfly.

My choice: Lawrence loves going to parties.

Problem: Dennis showed Samuel his 100% grade on the geography exam last week..

My choice:
Samuel was happy for him.