Dogs are our good friends as they can keep ______ with us when we are lonely．

 The need for an operation，especially an immediate operation， almost always comes as a ______ to the patient and his family. 

I bought a vase of the Ming dynasty at such a low price at the Sunday market. It was really a nice __________.

Every one of us is free to have our own religious _______.

---What do you think of your new English teacher？--- She was well prepared for her first lesson and left us a good________.