A few minutes earlier and we _____ the rain.
The road is covered with snow. I can’t understand ________ they insist on going by motor-bike.
— Are you still thinking about yesterday’s game?— Oh, that’s ____________.
______ made the school proud was ______ more that 90% of the students had been admitted to key universities.
There is a new problem involved in the popularity of private cars ____________ road conditions need ____________.
It is pretty well understood __________controls the flow of carbon dioxide in and out the atmosphere today.