Complete the sentences using the words in brackets. Remember – all the sentences have to be in present perfect. Use full verb forms.

1.  They have visited the opera. (to visit)

2.  We have already packed our rucksacks. (already/to pack)

3.  I have just cleaned my room. (just/to clean)

4.  My cousins have passed the math test. (to pass)

5.  My father has lost the keys, so he can't open the door. (to lose)