---What does your mother do?---She is ____________. She works in a hospital
Tom is sad. Everyone is trying to _______.
Sandy’s family can’t afford _______ a new house at present.
Look at the skirt. I bought it for my daughter ______ Children’s Day.
-- I haven’t seen your sister for a long time. – She _______ Beijing on business for a month.
-- Let’s go dancing tonight.—Sorry, I ______. I have to go to a meeting.