______ twice a year,whether it is a car or a truck,is the rule that every driver must obey in this city.
There is no simple answer, _____ is often the case in science.
It's good to knowthe dogs will be well cared for while we're away.
I stopped the car ____ a short break as I was feeling tired.
_________I have to give a speech, I get extremely nervous before I start.
— Oh no! We’re too late. The train _______. — That’s Ok. We’ll catch the next train to London.