Mrs. Robson invited us to dinner after_____.

A．I can speak German fluently.
B．You cannot eat in class.
C．If you won’t keep quiet, you can get out.
D．Lightening can be dangerous.

A．Arthritis is a disease causing pain.
B．Darts are essentially an easy game.
C．There are a book and several pens on the desk.
D．Linguistics are a required course for English majors.