Topics: Perfect Modals
I ________ known she was upset. I should have paid more attention.
A. should have
B. could have
C. might have
D. would have
Select your answer:

Random Topics:
Past Continuous and Past Simple TenseQuantifierDescribing WordsSo or SuchSynonymsConjunctions and Sequence ConnectorsIdentifying Sentence TypesNoun PhrasesRelative Pronouns with PrepositionsModal Verbs of Certainty and PossibilityOther quiz:
Grammar › ViewAt the closing ceremony of the Olympic Games, all the athletes………….good-bye to the audience.
A. charmed
B. waved
C. dared
D. gazed
Present Simple Passive › View
The internet …. for social networking mostly by young people
A. Is used
B. Used
C. Use
D. Are used
