The office building _____ the classrooms.A.behind B.behinds C.is behind
Whatshe like ? She likes. A. do, singB. does, sing C. does, singing
Wait at alight. A. red B. green C. yellow
Green light means “.” A. go B. wait C. stop
Stopa red light. A. for B. on C. at
Walk straight three minutes. A. at B. for C. in