When do you think ______ start the new attack?

This robot is supposed to save a lot of labor, but it remains a problem if it ______.

There are some police cars in front. What do you suppose _____?

herehasbeenagreatincreaseinretailsales,____﹖

InfactPeterwouldratherhaveleftforSanFranciscothan____inNewYork.