I、单项选择.(20分)1、 _____ , which is the way to Hill Building?A. Sorry B. Hello C. Excuse me D. Thank you2、We saw Bob jumping into the room_____ the window.A. across B. through C. cross D. by3、She is afraid of _____ out at night.A. going B. go C. to go D. goes4、—Why don't we ? &mdash..