Exam is soon, so here you have something to help you study:
Infinitives and gerunds presentation.
Infinitives and gerunds practice. *
Infinitives and gerunds that change meaning practice. *
Negatives practice.
Questions practice.
Hypothesizing practice 1 and practice 2.
Conditionals practice. *
Inversions explanation and practice *
You can also practice with your iChecker (Workbook CD). Take the exams for Units 4 and 11.
As for the exercises above, if you're not going to do them all, try to do at least the ones with a * .
If you have any questions, leave a comment here.
Good luck!
Oh. Alejandro, Look what I found!
And... for those who do not share our love for Doctor Who, but like TBBT.