Make these questions wh-questions. follow the model например: is nelly laughing? (why) why is nelly laughing? 1.do many people learn foreign languages? (why) 2.are they counting? (what) 3.does the plane leave for london? (when) 4.do they write letters to their friends? (how often) 5.does it become dark here late? (when) 6.is he joing us? (who) 7.does it often happen? (what)