He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside．

Charlie ______ be really difficult at times even though he’s a nice person in general.

How dangerous! She was driving the car with one hand and holding an ice cream with ____.

If you ________ carry with you the belief that whatever you do is right, it’s none of my business.

---__________ I have a ticket , please?                                          ---Sorry,sir. All the tickets were sold out ten minutes ago.