—What do you think of this matter? —This is a matter of __________ importance. I think.
—Willyoulendmeyourbook? —Yes,I_____.
_____tohavelunchwithustoday?
Everyone_____dohisbesttomaketheworldsafeandclean.
Heaskedmeifhe_____openthewindow.
Sincetheroadiswetthismorning,_____lastnight.