Перевести утвердительные предложения в вопросительные по английски: 1.Mary is going to

Перевести утвердительные предложения в вопросительные по английски: 1.Mary is going to learn English. (Who? What language?) 2.Sam and his girlfriend have come to stay with us this weekend. (Who? Where?) 3.There were five students in the class. (Where? How many?) 4.It usually takes my five minutes to get to the college. (How long?) 5.My father is forty-seven years old. (Who? How old?) 6.This magazine costs fifteen rubles. (How mach? What? What kind of?) 7.They collected stamps. (What? Who?) 8.It is raining. 9.They do not know english. 10.We did not go to a disco yesterday.