— Could I borrow your dictionary ? — Yes , of course you ____ . 

If you had worked hard, you ______ so anxious now．

--- Mike, it’s a pity you didn’t come to last night’s concert. It was really great! --- Really? If I ________ so busy, I would have gone with you.

---I rang you yesterday afternoon. A man answered, but I didn’t recognize the voice.--- Oh, it ____ my uncle. He was in my room then.

Sir, you ______ be sitting in this waiting room. It is for women and children only.