21-- I knocked over my juice glass. It went right over ______keyboard.
--- You shouldn’t put drinks near _______ computer.
A the; a B a; 不填 C a; a D the; 不填
22.At last they climbed up the mountain, on the top of which _______ an old temple dating back to 1500BC.
A. is lying B. there lies C. does lie D. lies
