Most teachers are very hardworking and professional, but there are a few bad apples who don't care too much students.

Janet is the apple of his grandfather's eye.  His grandfather adores her.

Amy is a very tidy person.  Her room is always in apple-pie order.

Everyone was nervous about the race except Bill, who was as cool as a cucumber.

They tried very hard to work on the project but it didn't bear fruit.

Sam is very shy.  If a girl starts talking to him, he will go as red as a beet.