[ Tenses ]
I ___ on the presentation when my boss called me.
A. worked
B. have been working
C. have worked
D. was working

Random Topics:
Future TenseWish SentenceModal Verbs - ObligationVerb Present Simple TenseIndependent ClausesComparatives or SuperlativesGrammar for TOEFLGrammar and VocabularyWH- Question WordsParallelism and Subject Verb AgreementOther quiz:
Prepositions › ViewThe professor _____ America was a great English teacher.
A. From
B. Of
C. In
Time › View
I have ____ finished this book.
A. Already
B. Previously
C. Yet
If it’s “up in the air”, it’s ___.
a. important
b. undecided
c. unwanted
Essential and Nonessential Clauses › View
The movie was emotional, and I was ____ by its message.
A. Affected
B. Effected
