A teacher is __________ to be patient and not to lose his temper whatever mistakes his students make.
Some students even have no idea of they are studying, so they waste much time playing.
If you ________ smoke in the room, please keep the windows open.
From the top of the tower, people can see at least ________ distance of 10 kilometers on ________ clear day.
A number of high buildings have arisen ______ there was nothing a year ago but ruins.
I’d like to go to Tommy’s birthday party this evening, but I _____ just _____ from the flu.