Is this the first time that you ___ late?
In the early morning all of us stood at the top of the mountain ___________ east of the city, watching __________burning sun rising.
________ that saw the rise of quite a number of new writers.
There is a real possibility that these animals could be frightened, ________ a sudden loud noise.
–This summer is very hot. --Yes, but it’s not __________ as hot as last summer.
Our teacher entered the classroom, __________.