Being examined twice a year, whether it is a car or a bus or a truck, is the rule that every driver _____ obey in this city.
--- Did you go to London for vacation? --- I _____ to go, but I got sick at the last minutes.
Higher temperature turning large ice sheet to water would cause _____ rise in sea levels worldwide and change _____ weather on earth.
It was raining heavily. Little Mary felt cold, so she stood _______ to her mother.
I will never understand how it __________ that you were an hour late on such a short journey.
We won’t give up _______ we should fail ten times.