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Workbook UNIT 2 - Technology: friend or foe?

Exercise

6

Choose the correct alternative.

Solution

  1. have known
  2. was
  3. became
  4. has been
  5. has been
  6. has become
  7. Have you heard
  8. wasn't

Altri Esercizi

1
3
4
5
6
7
8
9
10
11
13
14
15
17
18
19
20
21
24
26
28