Some people ________ not have plans yet for New Year’s Eve, but others know exactly what they will be doing.

We ________the difficulty together, but why didn’t you tell me?

—I wonder why Susan looks worried today.
—I’m not sure, but she _____a small accident driving here.

— Is Jack on duty today?
— It ________ be him. It's his turn tomorrow.

— I phoned you yesterday morning. A girl answered, but I didn’t recognize the voice.
— Oh, it ____ my younger sister. She was in my room at that moment.

---I haven’t got the reference book yet, but I’ll have a test on the subject next month.
---Don’t worry. You ______ have it by Tuesday.

Mr. Bush is on time for everything. How ____ it be that he was late for the important meeting?

—It’s hard to believe that Jack ________ have fought with the policeman.
—Yes. If one ________ ask for trouble, it can't be helped.

—Mother, I climbed up to that tall tree and picked this big apple.
—Jesus! You______ down and hurt yourself.

—Did you ask Tom for help?
—I ________. —I managed perfectly well on my own.