It is said that _________ mobile telephone was invented not very long ago.
The workers do nothing but _______ tea and talk to each other.
Every year, a great many visitors come to visit the temple ______ the 12th century, ______ has brought a large income.
She makes _______ effort to learn maths and she has made _______ great progress in it.
Only in a few countries in the world _______ a reasonable standard of living.
They came together with the same ______ about the earth’s environment and the same dream of co-existing peacefully.