It’s generous __ ___ them to donate money to UNICEF. They think it important _____ them to help poor children go to school.
Tom made a fire_________ us _________ warm yesterday.
–________ did you do yesterday? –Before I visited my good friends, I went to the zoo.
The guide taught us how________ a model robot.
The ______doctors like eating beef and _______ noodles.
It is important _______________ at others.