Exercises to review present simple, present continuous, past simple and past continuous

Students in 3º ESo, here are some exercises to revise for the exam.
past simple:
http://www.ego4u.com/en/cram-up/tests/simple-past-1
past continuous:
http://www.ego4u.com/en/cram-up/tests/past-progressive-1
Present simple:
http://www.ego4u.com/en/cram-up/tests/simple-present-1
present continuous:
http://www.ego4u.com/en/cram-up/tests/present-progressive-1