Look! It must be Jack on the playground.—It _____ be him. Because I saw him enter the school library just now.

Viewers continue to watch TV ____ they complain about the quality of the programming[ ]

You don’t have to _____ me you’re the right person for the job.

Is Tom still smoking?—No．By next Saturday he _____________ for a whole month without smoking a single cigarette

What can I do for you, sir? —I’d like to see the manager_____of sales department[ ]