[ Modals Verbs ]
They ____ the meeting. They never showed up.
A. could forget
B. must have forgotten
C. should forget
D. can have forgotten

Random Topics:
Much, many, a lot of, a few, a littlePassive Voice in Past and Present TenseGrammar - Future Actiongoing toSubjective and Objective PronounTOEFL Adjective and AdverbMoods of GrammarPersuasive TextInfinitive GerundSimiles and Body IdiomsOther quiz:
Past Tenses › ViewCombine past continuous and past simple in a sentence.
A. While watching TV, she called.
B. I was watching TV when she called.
C. She was calling while I watched TV.
D. I watched TV when she called.
Grammar; Clauses › View
If I had had enough money, I ……that radio.
A. Bought
B. Would buy
C. Would have bought
D. Had bought
Grammar › ViewWe have English _________ Tuesday and Wednesday.
A. in
B. at
C. with
D. on
Modal Verbs › View
You ____ call a doctor if the symptoms persist.
A. should
B. can
C. may
