The International Day against Drugs,aimed at warning people to keep away from drugs, _________ on June 26th every year.
28.—Thank you very much. —Not at all , I was____________ glad to help.
27.I would have come to see you earlier, but I __________ too busy.
26.With summer coming on, the weather gets hot _________.
25.In Switzerland, six miles west of Geneva,___________ a collection of laboratory buildings.
24.America was____________ was first called" India" by Columbus