( )21. The UK is _______ European country and it’s also ______ island country.
A. an; an B. a; a C. an; a D. a; an
( )22. They pay for the treatment because ORBIS is a charity.
A. needn't to B. must C. don't need to D. have to
( )23.—Do the Winter Olympics have similar events to______in the Summer Olympic Games?
— No. Winter Olympic Games only include winter sports.
A. those B. this C. that D. ones
