[ Quantifiers ]
These two boys look identical. They ________ twins.
A. must have been
B. should be
C. must be
D. should have been

Random Topics:
Verb + InfinitiveAlong & AgainstGrammar: Have toGrammar ( going to)Coordinating ConjunctionFuture Time and TensesSimple TenseTenses and Time MarkersPhrases and TensesModal Verbs - ObligationOther quiz:
Grammar › ViewHad they arrived at the conference earlier, they________the professor they admired.
A. had met
B. have met
C. met
D. would have met
Vocabulary and Grammar › View
… – a situation in which there are many different types of people, ideas, religions etc existing together
A. mixture
B. communication
C. melting pot
D. composition
Preposition of Direction › ViewThe hypermarket is located ________ the office building and the bank.
A. among
B. over
C. between
D. above
Grammar › View
The difference was very __________.
A. subtle
B. major
C. irritable
