Learning materials

Hi everybody,

Could you advise some good learning materials in connection with tenses? So far we took simple present, simple past, present continuous, past continuous, present perfect (I took much more but now I'm trying to teach someone [and I'm not a teacher. She knows that.]), I would like to have comparative tasks done by her (= tasks where you have to choose the appropriate tense). So let's just consider these five tenses for now.

Maybe this question is not in the appropriate place but I don't know where I should ask it.

Thanks for your help in advance.