室内的空气不清新,为了换一下空气,这时你需要:A. Open the window .B. Close the window .
()I’m in London . A. yesterday B. now C. tomorrow
()Your hair very short. A. was B. were C. are
()I in Hong Kong. A. were B. was C. do
()Mum and Amy weren’t Beijing. A. of B. at C. in
()They my grandparents. A. are B. is C. do