intercalary

"My math teacher recommended a specific textbook for extra practice. "

"My daughter's teacher is very kind and helpful. "

"The three principal calendars are the Gregorian, Jewish, and Islamic calendars."

"Except for one or two days a year, he usually walks to work."

"The seamstress used a sturdy between to create a precise, even stitch on the thick upholstery fabric. "

"The feeling is difficult to describe, but not unpleasant."

"In order to withdraw money from a cash machine, you have to insert your debit card."

"I have to focus on my work."

"You need to learn to be more tolerant of difference."

"The library offered an extension on the due date for the overdue books. "

"February has 28 days, except in leap years when it has 29."

"This latest discovery should eventually lead to much better treatments for disease."