We advise parents _____ their children at home alone in order to keep them away from danger.
The book ________ be Tom’s. Look! His name is on it.
---Come and join us.--- I’m sorry, but I’m busy. If I ________ time, I would go.
Martin was once ________ “problem student”, but now he’s one of ________ top students.
The book is very difficult. ________ read something easier?
The underlined part in the word “needed” is pronounced as ________.