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1º Choose the right alternative:

1-Made
2-hasn't
3-haven't been
4-tested
5-has
6-have you ever
7-how long
8-should be 
9-it's been
10-since

2º Choose the right alternative:

1-C
2-B
3-A
4-B
5-A

Listening

1-C
2-B
3-A
4-C
5-B
6-C