These toys are not suitable for children four years old, who are too young.
— Did your sister pass the exam? — She failed and is in low spirits.— I'm sorry for her.— ______.
He is only too ready to help others, seldom, ______, refusing them when they turn to him.
— How’s your tour around the North Lake? Is it beautiful? — It ______ be, but it is now heavily polluted.
The house could fall down soon if no one ______ some quick repair work.
Right now you can pay ______ you had to several years ago for a cool computer.