[ Passive Voice & Tenses ]
So far the problem (not/ resolve) ____ has not been resolved.
A. hadn’t resolved
B. has not resolved
C. have not been resolved
D. has not been resolved.

Random Topics:
Modals of AdviceArticles and PrepositionsRelative & ModalsSubject/Verb Agreement with Collective NounsPossessive Pronouns and QuantifiersPresent and Past TensesSuch...that, so ......thatTenses and OpinionsConjunctions, Prepositions and InterjectionsDemonstrative PronounOther quiz:
Past Continuous Tense › View_____ you _____ football at 2 PM ?
A. Were, playing
B. Was, playing
C. Are, playing
D. Do, playing
Grammar › View
Don’t call Bob now. He ………. (have) his French lesson.
A. has
B. will have
C. ‘ll be having
D. is going to have
Vocabulary and Grammar › View____________ Bobby often ____________ physics experiment after school?
A. Does/do
B. Is/do
C. Does/do
D. Is/does
Pronoun › View
I told …… that they upload some photos in Instagram to show their activity.
A. they
B. themself
C. them
D. their
