F6 Grammar April, 4th-5th

The future simple (lihttulevik) will 

Signal Words: in one year, next week, tomorrow

https://www.ego4u.com/en/cram-up/grammar/future-1-will/exercises?02
https://www.ego4u.com/en/cram-up/grammar/future-1-will/exercises?03
https://www.ego4u.com/en/cram-up/grammar/future-1-will/exercises?04
https://www.ego4u.com/en/cram-up/grammar/future-1-will/exercises

Future I Simple (going to)

https://www.ego4u.com/en/cram-up/grammar/future-1-going-to/exercises?02
https://www.ego4u.com/en/cram-up/grammar/future-1-going-to/exercises?03 
https://www.ego4u.com/en/cram-up/grammar/future-1-going-to/exercises?04 
https://www.ego4u.com/en/cram-up/grammar/future-1-going-to/exercises?05 
https://www.ego4u.com/en/cram-up/grammar/future-1-going-to/exercises 

Present Perfect Simple

Signal Words of Present Perfect                                                                                                 already, ever, just, never, not yet, so far, till now, up to now

https://www.ego4u.com/en/cram-up/grammar/present-perfect-simple/exercises?04
https://www.ego4u.com/en/cram-up/grammar/present-perfect-simple/exercises?03 
https://www.ego4u.com/en/cram-up/grammar/present-perfect-simple/exercises?05 
 https://www.ego4u.com/en/cram-up/grammar/present-perfect-simple/exercises?07

Prepositions

https://www.ego4u.com/en/cram-up/grammar/prepositions/exercises?18

The plural of nouns in English

http://www.englisch-hilfen.de/en/grammar/plural.htm  

http://www.englisch-hilfen.de/en/exercises/nouns_articles/singular_plural4.htm 

http://www.englisch-hilfen.de/en/exercises/nouns_articles/plural2.htm 

http://www.englisch-hilfen.de/en/exercises/nouns_articles/plural3.htm