Complete these sentences with the correct form of used to / didn't use to and the verbs in brackets.
1 They
(live) abroad, but they moved back to
this country last year.
2 She
(be) a student, but she finished her
university course in June.
3 She
(eat) meat, but now she has chicken
sometimes.
41
(like) cats, but I prefer dogs now.
51
(enjoy) TV, but now I find most of the
programmes boring or annoying.
5 We
(spend) a lot of time together, but now
we hardly ever see each other.
7 He
(speak) a foreign language, but he
started going to Spanish lessons last year.
8 My grandad
(have) a lot of money, but he's
quite rich now.​

1) How long will you be owning this beautiful house, Mr Starr? - Not so long. I’ve just bought it. 2) Look at Nick's clothes! I think he played football. 3) I'm so tired. I was skiing all the afternoon. 4) I know this rule nearly all my life. 5) I have been phoning him for an hour and a half. There is no answer. What was he doing all this time? 6) If they have been in Moscow for two weeks, they have visited the Bolshoi already, I think. 7) My friend Rose has been studying French since last year. She can speak it a little.

Он написал множество математических трудов, однако математики заклеймили его "еретиком" - создателем первой не-эвклидовой геометрии. Геометрическая система Эвклида единолично правила в на протяжении двадцати столетий. Учёные повсеместно считали, что математика, а в особенности, геометрия, состояла из аксиом, существующих непосредственно от человека. Два плюс два всегда дают в сумме четыре, а сумма трёх углов треугольника обязана быть равна 180 градусам.
Лобачевский сделал рискованный шаг и создал новую геометрию,  не предназначенную для обозначения реальности. Это была лишь самодостаточная математическая система на поверхности так называемой псевдосферы. Геометрия Лобачевского стала революцией как в математике, так и в философии науки.