When are you going to ______ your novel __________

I hadreached a point in my career _____ I needed to decide which way to go

Upon their entering the tomb, Carter’s lucky pet bird, which he ____ in Cairo, was swallowed by a snake

With the development of science,a computer is to a manager_______a gun is to a soldier

It was at the very beginning____ Mr. Smith made adecision ___we should send for a doctor．