在下列国家实现宏观调控的各种手段中,属于经济手段的是( )
My teacher used to _______ a bike to school, but now he is used to ________ a car to work.
When he saw the poor conditions in the school, he decided to ______ some teaching instruments for them.
The flight to New York was ________ because of the heavy fog.
—What did you talk about just now? —My father asked me ___________.
______ you say sorry to your uncle, he won’t forgive you.