There ________ be any difficulty about passing the road test since you have practised a lot in the driving school.

 ——She looks very happy. She       have passed the exam.    ——I guess so. It’s not difficult after all. 

— Can I go to the movie, Mum?— Certainly. But you _______ be back by ten o’clock.

 —Who’s that boy reading in the study ? Is it David?—It __________ be David. I saw him go home just now.

---Whose notebook is this? --- It ________ belong to Lucy. Look, her name is in it.