Biased opinion here (since I’m a team member), but marumori.io builds up its grammar lessons by using vocabulary that has taught you in advance 
Check it out, 14 days of free trial to be (ab)used!
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Biased opinion here (since I’m a team member), but marumori.io builds up its grammar lessons by using vocabulary that has taught you in advance Check it out, 14 days of free trial to be (ab)used!