PARTS OF THE COMPUTER AND THEIR FUNCTIONS

http://www.otsego.k12.oh.us/bradley/basics.htm

Let's practise THE PAST PERFECT TENSE! 

http://www.usingenglish.com/quizzes/140.html

Let's practise THE PAST SIMPLE VS PAST CONTINUOUS TENSES!

http://www.learnenglish-online.com/grammar/tests/pastcontinuoussimplepast.html

Let's practise THE PRESENT SIMPLE TENSE! 

http://www.usingenglish.com/quizzes/65.html

Let's practise the verb TO BE!

http://www.bradleys-english-school.com/online/flashmultiplechoice/mc_amisare.html

RELATIVE CLAUSES

Let's read and practise:

http://learnenglish.britishcouncil.org/en/english-grammar/clause-phrase-and-sentence/verb-patterns/relative-clauses

REPORTED SPEECH

Let's read and practise...

http://learnenglish.britishcouncil.org/en/grammar-reference/reported-speech-1

QUANTIFIERS

Here is an explanation on quantifiers and two online exercises for you to read and practise:

http://learnenglish.britishcouncil.org/en/english-grammar/determiners-and-quantifiers/quantifiers

NARRATIVE TENSES

Here is an online exercise for you to practise a bit more...

http://elt.oup.com/student/naturalenglish/upp/a_grammar/unit05/neup_grammar05;jsessionid=C1B6867E6299386314C143B8C72C41CB?cc=ar&selLanguage=en

THE PRESENT PERFECT SIMPLE

Here is a link for you to listen about this tense...

http://youtu.be/jP8OdFciXYw