270. The main task of the government is to reduce the level of inflation (通货膨胀). The word "task" means ______.
Tom took a taxi to the airport, only ______ his plane high up in the sky.
New technologies have made ______ possible to turn out new products faster and at a lower cost.
Not only I but also Jane and Marry ______ tired of having one examination after another.
If he takes on this work, he will have no choice but ______ an even greater challenge.
As a child, Jack studied in a village school, ______ is named after his grandfather.