湖南省怀化市2014年高三第二次模拟考试)27. The retired teacher is said to have returned from the USA, where he ______ by some of his old students.
The volunteers try to convince people _____ the fact that some species are in danger of _____.
Across the river _____.
_____ all the demands had been refused _____ to go on strike.
. The temperature has _____ heavily, which doesn’t _____ the growth of the crops.
You should keep an eye ______ him, for I have lost faith ______ him.