These students will graduate from college next summer, by which time theyin college for four years

（2012宿迁）—May I speak to Mr Wang—Sorry．He________a speech now．Please call later．

You are leaving your school. How do you like it —- Very much, of course. I _________ this school since I moved here.

According to a report, cigarette smoking _____ in all indoor public places in some provinces soon.

This is a picture of DrYuan, a scientist ____ is well known in our country