Use ‘would have’ in a sentence to express a hypothetical situation in the past.
A. If I had known about the meeting, I would attend it.
B. I would have gone to the party if I knew it was happening.
C. If I had known about the meeting, I would have attended it.
D. If I knew about the concert, I would have gone to it.

Random Topics:
Time ClauseVerb Forms and PrepositionsModal Verbs and ConjuctionsRun-On SentencesSo, Such, Many, MuchAlong & AgainstSimple Present VS Present ContinuousTo infinitive - GerundDescriptionsa, an, the, zero articleOther quiz:
Grammar › ViewWhat did you use to play with?
A. I use to play with cars.
B. I did used to play with cars.
C. I used to play with cars.
D. I am used to play with cars.
Modal Verbs › View
You are not allowed to use red ink in the exam.
A. You should use red ink in the exam.
B. You may use red ink in the exam.
C. You mustn’t use red ink in the exam.
D. You needn’t use red ink in the exam.
Tenses › ViewThey … to play the guitar right now.
A. are learning
B. learn
C. learns
D. learned
Tenses › View
It’s good to wear a hearing aid now. Before using it, I always ____ to read people’s mouth when they ____ to me.
A. needed, speak
B. needed, had spoken
C. needed, spoke
D. was needing, spoke
E. need, speak
