I will take a holiday with my family _______ I finish all the exams.
-- Chinese astronauts can also walk in space now.-- Yes, they're ______ our nation.
--Where are the ______ students?--They are playing football with ______ students from Hilltop School.
--Is Tom still in New York or already back at home?--I’m not sure ________. I’ll call to make sure.
Everyone may feel time ______very quickly when they do something interesting.
--Driving less, walking more is good for our health.--So I'd rather ______an hour's walk to work than consider ______a car.