-- How long ________ since our School founded “Wechat Group”?-- For eight months .We carried it out in March.A. was it B. has been it C. is it
—How often does the boy go to see his granny? —.
The workers finished mending the road ____ this month.
—What do you think of the film? —I have no idea.Because I it.
— Have you got any brothers or sisters? — ________.
Yang Liwei is the first man ________ the moon.