[ Grammar ]
Frank passed the exam without studying for it. The exam …. very difficult.
A. must be
B. can’t have be
C. can’t have been

Random Topics:
Future SimpleAdjectivesSentence CompletionParticipal PhrasesComparative and Superlative AdjectivePassive Voice - Present ContinuousPresent Perfect, Present Simple, Present ContinuousConjunctions, Prepositions and InterjectionsComparative and Superlative AdjectivesPresent Simple with Adverbs of FrequencyOther quiz:
Present Tenses › ViewWho ____ likes horrors?
A. –
B. does
C. do
D. is
Indefinite Pronouns › View
She didn’t bring …………. to the party.
A. everything
B. something
C. anything
D. nothing
Tenses › ViewFuture Simple Tense
When will you return from your vacation?
A. I will return tomorrow.
B. I am returning tomorrow.
C. I returned tomorrow.
D. I will have returned tomorrow.
Tenses › View
The boys (play) soccer for half an hour when it started to rain.
A. are playing
B. were playing
C. have been playing
D. had been playing