The shop_____sells flowers is at the end of the street.A. who B. where C. which
We tried our best to ______, but she didn’t stop crying.
By the time of last year, she ______ the piano for five years.
—Listen! Peter is singing in the classroom!—It _____ be him. He has gone back to his hometown.
Keys _______ opening the lock in the door.
—I have never been to the Great wall. —If you have an opportunity _______ there, you must take it.