[ Grammar ]
You’ve been working on this problem all day, but we still can’t figure ___ a solution.
A. up
B. on
C. out
D. off

Random Topics:
Adjectives with PrepositionAdverbial ClauseThird Grade ExamGrammar and SyntaxConditional SentencesPresent Simple with Adverbs of FrequencySubject and Verbs AgreementSimple and Progressive Verb TensesModal Verbs and Contrastive ConjunctionsTypes of Simple SentencesOther quiz:
Pronoun › ViewWill you lend me your book? I will return ____ tomorrow. I promise.
A. me
B. her
C. him
D. it
E. us
Tenses › View
Ben ______ the internet now.
A. is surfing
B. surf
C. surfs
D. surfed