In human, there is a possibility of____ such asfever and headachesif there is exposure to the virus.

About 60 percent of the students ________ from the south; the rest of them ________ from the north and foreign countries.

This ________ Linda. ______ is my sister.

Letters to the editor must carry the writer’s full name, which indicates that writers are _____for what they say．

35 He asked , “ Are you a Party member or a League member?” →He asked me _________