[ On, At, By ]
He’s reading ____________ grammar_________ P. Vera Bull
A. on/about
B. about/by
C. by/by
D. by/on
Select your answer:

Random Topics:
Common ErrorPast Simple, Present Perfect TenseArticles and NounsIdentify The TensesSimple Verb TensesSuffixes (ing-ed) SentencesConjunctions and CommasPresent Perfect & Past Simple TensePast Tenses and ConditionalsPresent Simple vs Present ContinuousOther quiz:
Future Tense and Conditionals › ViewIf she helps me, I ____ her with her project.
A. help
B. helped
C. will help
D. helping
Mixed Tenses › View
By the time he arrives here tomorrow, they _______ for London.
A. would have left
B. will have left
C. will left
