ESERCIZIO NUM: 649 - CATEGORIA: verbi > present-perfect - DIFFICOLTA': ****
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Quali delle seguenti frasi sono al PRESENT PERFECT TENSE?

1 We have seen the light. / 2 I have finished my work for today. / 3 She saw him and she liked him. / 4 We had a great time in Switzerland. / 5 They have given us their full support. / 6 She had already eaten before she arrived. / 7 We have to achieve our targets. / 8 Since July, the company has lost money. / 9 You are advised to stop what you are doing. / 10 They have asked us to stop what we are doing. / 11 They bought three loaves of bread. / 12 They had bought three loaves of bread. / 13 They have bought three loaves of bread. / 14 All my friends have already seen that movie. / 15 Many people have commented on my blog.