Present Perfect

In order to practise this tense -the Present Perfect- I recommend you to visit this page where you will find some useful grammar explanations about it.
You can do the following exercises:

• Exercise one. 
• Exercise two.
• Exercise three.
• Exercise four.
• Exercise five. For or since.
• Exercise six. For or since.
• Exercise seven. For or since.

Then, you can do the exercises that follow the explanation:

• In exercise 5 you can practise with sentences in isolation. 
• Exercise 6 6 is about present perfect in context.