______how others react to the book you have just read creates an added pleasure.
There was a lot of fun at yesterday's party. You________come, but why didn't you?
—John, how did your maths exam go? —I thought I________, but in fact I came in the top ten in the class.
As you worked late yesterday, you________have come this morning.
The weather turned out to be fine yesterday. I________the trouble to carry my umbrella with me.
—She looks very happy. She________have passed the exam. —I guess so. It's not difficult after all.