Present perfect exercises with answers - Tenses exercises

Use the present perfect form of the verbs to complete the sentences.
Grammar review present perfect
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This support has increased significantly since 2007. (increase)
The hills have been on fire since noon yesterday. (be)
Direct negotiations between Israel and the Palestinians have been on hold since late September 2010. (be)
Europe 's solidarity has been in action since the outset of turmoil in Libya. (be)
The Zapatistas confess that they have learned a lot since they proclaimed the Sixth Declaration. (learn)
The world has changed substantially since NAFTA came into force in 1994. (change)
Muttering ELIZA, I feel like I have been paranoid since day one. (be)
Creative Commons licenses have been around since 2001. (be)
More than 200,000 individuals have experienced track since opening. (experience)
He has been President since December 2006, and was Vice-President between 2003 and 2006. (be)
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