[ Modals and Tenses ]
Change to past simple: I am reading a great book.
A. I am reading a good book.
B. I was reading a book.
C. I read a great book.
D. I was reading a great book.

Random Topics:
Linking Words and ConjunctionModals Posibility and ProbabilityAdverbial Concession ClausesPerfect and Past TensesParallelism and Subject Verb AgreementCompound SentencesFuture TensesGrammar (was, were, could, could not)So, Such, Many, MuchComparisionOther quiz:
Proverbs › ViewStrike while the iron is hot
A. Wait for the opportunity.
B. Do not do anything at all.
C. Be careful.
D. Take the advantage of the moment.
Grammar › View
What is the verb in the sentence below?
Sally and John caught the lightning bug in a jar.
A. and
B. caught
C. lightning
D. in