stuck

"After the meeting, there was a period of intercourse between the colleagues, discussing the project's next steps. "

"The student's hesitation before answering the question was noticeable. "

"The papers were carelessly strewn on the table."

"My teacher explained the new math concept, and I understood it perfectly. "

"The violinist was a master of her instrument."

"Marc went to the park with his girlfriend and watched the sunset with her."

"Learning a new language often presents many difficulties, including remembering vocabulary and understanding grammar rules. "

"The difficulty of the math problem made it hard for many students to solve it. "

"The coffee maker is functioning properly this morning, so I can have my coffee. "

"The teacher patiently explained the math problem, and the students were able to understand the steps involved. "

"We used hamburgers and soda in contradistinction to healthy food."

"The teacher complicated the math problem by adding several extra steps. "