[ Grammar ]
I discovered he …… it correctly.
A. Hasn’t done
B. Hadn’t done

Random Topics:
Grammar: Have toVerbs: Will & Going toPassive ModalsSecond ConditionalModal Verb, Passive VoiceSimple Present - Negative & InterrogativeAbilityFuture - be going toAdverbs of DegreeVerbal PhrasesOther quiz:
Gerund vs. Infinitive › View Parking in the driveway in front of school is prohibited.
A. Partciple
B. Gerund
C. Infinitive
Subject-Verb Agreement › View
Our neighbours ________________ to Melbourne to watch the Australian Open .
A. Has gone
B. Have gone