After two years' research,we now have a ________ better understanding of the disease.(2013·全国Ⅱ)
Some people like living abroad, while others think there is ______ like home.
He was ______ about his ______ son, who is always skipping classes.
Julie was good at German, French and Russian, all of ______ she spoke fluently.
We narrowly escaped _____in the forest of South America 15 years ago.
Mr. Smith spoke slowly and clearly to _____ all of us students could follow him.