It’s generous _______ them to donate money to UNICEF. They think it important _______ them to help poor children go to school.
My brother is studying in ______ university in America; he wants to be ______ astronaut in the future.
Now there are already robots _________ in factories.
Everyone except Tom and John ________ there when the class began.
Mr. Chang has ________ money but ________ friends than Mr. Chan.
Who broke the door? Let’s__________.