–Does the young man standing there________ the company? –No. The company is________ his father.

Listen! Is it Linda singing in the next room –No, it __________ be her. She is still in Shanghai.

_____ eastward, _____ you’ll pass mountains and thousands of lakes and forests. [ ]

Do you know where the headmaster is? I have something urgent.　　　　—Oh, he ____ have gone far, for the computer is still on in the office.

lthough he didn’t mention any names,everyone knew _____ he was _______.