3 * Complete the sentences with the
form of used to and the verbs in brackets.
1 People used to think (think) that the Earth
was flat.
2
(you/believe) in Santa Cas?
3 The Sahara Desert
(no
sandy, it
4 Where
(you/spend) your holidays
when you were a child?
5
(the River Thames/freeze) when it
was very cold?
6 Our grandparents
(no 6.) CD
or mobile phones.
(be) green​

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