Раскройте скобки, выбрав правильную форму. 1) Many different languages (to speak) in the world.  2) We (to sell) a lot of equipment recently.  3) Our economists (to visit) the exhibition now.  4) How (many/much) people work here?  5) He (to spend) some time in the UK last month.  6) I will be happy, when I (to pass) my exams.