—Guess what? Tom has failed in the exam ____ second time.—How come? He is ___ second to none in English in our class.
By the time you have completed the essential training, you _____ exposed to virtually every new feature of the course.
_______ more to be pitied than blamed.
Earth is believed ______ by an object the size of Mars at some point in the distant past before its surface cooled.
With temperature ______ so rapidly, we could not go with the experiment.
--- Is John in the office? ---I didn’t see ______ there.