Have you read a book called "The Merchant of Venice"？

Yes．_______ book is very interesting．（　　）

A．AnB．AC．TheD．/

The 31^st Olympic Games will take place _______August 5，2016．（　　）

A．atB．ofC．inD．on

Which sign of the following means "No Smoking"？（　　）

A．B．C．D．

Do you know whose iPhone6s this is？

Let me see．Oh，it's _______．（　　）

A．hersB．herC．himD．their

I can't go with you．I _______stay at home until my parents come back．（　　）

A．canB．mayC．mustD．could