— I can’t find my dictionary anywhere.
— You _____ have lost it while studying in the library.

---Look at these tracks. It _____ be a wolf.”
---Don’t be so sure. I think it _____ be a fox.

Antony _____ be an actor, for he doesn’t like plays or films at all.
must        B. may              C. can’t           D. mustn’t

— You just think of yourself! You kept me waiting for two hours.
I’m sorry that you ______ think so.
would           B. should           C. could            D. might

He demanded ___ here in time.

If you ___require any further information, please do not hesitate to contact us.

---Do you know where David is? I couldn’t find him anywhere.
---Well. He ______ have gone far----his coat’s still here.

You ______be sitting in this waiting room, sir. You see, it is for women and children only.

The weather ________ be very cold at times, though it’s usually warm in spring in my home-town.

Despite the fact that his scores were good, they were hardly as excellent as a student with his intelligence          .