Aron Ralston wrote a book __________ Between a Rock and a Hard Place

When he saw all his books _____ here and there on the floor, he knew that something terrible _____.

Hurry up! Once the concert starts, nobody to enter the concert hall.

Mr. Black is a careful and experienfed engineer, so he is often _____ to finish some challenging tasks.

I haven’t seen you walk your dog recently? Why?—Well, I have _______ the habit, as it _______ too much of my spare time.