To keep the air fresh during the night, I often sleep with the windows on ________ it’s really cold.

I should very much like to have gone to that party of theirs, but ＿＿＿＿＿

They are __ the old houses in order to set up a new teaching building.

It is the third time that she has won the race, ____ has surprised us all.

We have only a short holiday, so let’s the most of it and try to enjoy ourselves.