Whenever we are in ________ , we must never lose ______ , but try to think of the way out.
The theory he sticks to ______ to be of no use in our studies.
The man you referred to _____ just now.
How happy we are! The holiday we have been looking forward _______ at last.
You can never imagine what great difficulty I had ______ your house all by myself.
Who did the boss _____ his car this time?