It’s generous _____ them to donate money to UNICEF.They think it’s important _____ them to help poor children go to school.
It’s said that his father was attacked ________ a man ________ a knife.
________ are crazy about listening to pop music in their spare time.
—Do you know ________? —All of them ________ the museum.
Tom has ________ that he lives a happy life.
________ everybody is here, let’s begin our meeting.