welches

"The teacher warned the students about the upcoming test. "

"My obligation to my family means I need to visit them regularly. "

"I borrowed a pen from my classmate because I forgot mine at home. "

"The heavy rain was leaving puddles all over the playground. "

"He failed to make payments on time and is now in default."

"My sister is very helpful, especially when it comes to organizing things. "

"The new bicycle costs 200 dollars. "

"Every person who passes by is a potential customer."

"if I make a promise, I always stick to it;  he broke his promise"

"You made a promise, son, and now you must fulfill it."

"My brother welched on the $5 he owed me for the movie ticket. "

"The school is located just outside the town, without the main shopping area. "