My dad has arrived late from work. He ________ (have) an overtime. His company is understaff now.
must have had
Some people said that the aliens _______ (build) the pyramids in Egypt.
may/might/could have built
The person who called me last night _________ (be) my sister. She was sitting next to me when my phone rang.
must/could not have been
I think you _______ (see) a black bear instead of Bigfoot in the forest. It is only an urban legend.
may/might/could have seen
The meal ________ (taste) awful. It was very delicious.
couldn't/mustn't have tasted
I can't find my wallet. I _______ (drop) it somewhere when I rode my bike.
may/might/could have dropped
I _______(drink) too much in the party. I don't remember much!
must have drunk
I heard my grandma's voice last night. But my mom told me that I _______ (dream) because grandma passed away years ago
must have dreamed/dreamt
A ghost _______ (steal) your watch. You just forgot where you put it.
couldn't/mustn't have stolen
Bello turned red and started stammering in his speech yesterday. He ________ (feel) nervous. It was his first time!
must have felt
