We had a tiring meeting _______ I kept falling asleep.
—Who left the door open?— Oh, sorry. I _____ the door.
The traffic problems we are looking forward to ______ solved should have attracted the government’s attention.
He seemed to be looking for the words ____ he could express his idea.
A modern city has been set up in ____ was a wasteland ten years ago.
To make members of a team perform better, the trainer first of all has to know their ____ and weaknesses.