[ Grammar ]
Change to passive:
They could not have made the mistake.
_____
A. The mistake have been made by them.
B. The mistake could not had being made by them.
C. The mistake could not have been made by him.
D. The mistake could not have been made by them.

Random Topics:
Formal & Informal WordsGerund, Infinitive, Bare VerbFirst and Second ConditionalContinuous and Perfect TensesKinds of SentencesVerb FormsNoun Verb AgreementComparisionConditional TensesAdverbial PhrasesOther quiz:
Prepositions and Phrasal Verbs › ViewAlthough she promised to be punctual,she did not show …… until half an hour later.
A. off
B. in
C. about
D. up
Modals for Necessity and Suggestions › View
You ______ try reading a book in English, you might enjoy it.
A. have to
B. should
C. must
D. can’t
Vocabulary › Viewextremely; sharply; eagerly
A. keenly
B. warily
C. furrow
D. chaos
Grammar › View
Choose the sentence that is written correctly.
A. I am remembering your face!
B. I remember your face!
C. I am remember your face!
