6 Put the verbs in brackets into
the correct tense.
1 She
(visit) Rome twice.
2 She
(get) into the
a taxi and (head)
for the station.
3 They ..
(move) to
Madrid in 2010.
4
(you/ever/try) scuba diving?
or 5 We
(not/book) our flight yet.
6 What time
(they/arrive) last night?

One of the author’s purposes in the code book is to explain different types of codebreaking to his readers. which line best demonstrates this purpose? a theoretical breakthrough would be a fundamentally new way of finding alice's private key mathematicians have been studying factoring for centuries, and modern factoring techniques are not significantly better than ancient techniques a more recent development is the so-called tempest attack, which aims to detect the electromagnetic signals emitted . . in a computer's display unit if scientists could build a quantum computer, it would be able to perform calculations with . . enormous speed