[ Modal Verbs ]
They __________ (could / must) have taken the wrong train.
A. must
B. will
C. could
D. can

Random Topics:
Modals, Phrasal Verbs, Gerunds and InfinitivesClause Markers TOEFL GrammarSecond and Third ConditionalAbilityHave to/Has toHope, Thank, Modal VerbsAdverbial Clauses of Manner and ResultRelative Clauses with who and whichPresent Perfect and Present Perfect Progressive TensesSimple Compound and Complex SentencesOther quiz:
Verb to Be Tenses & Object Pronoun › ViewSelect the correct form of ‘to be’ in past tense: I _______ at the park yesterday.
A. was
B. is
C. were
D. am
Mixed General Quiz › View
Brazilian soccer stars contracted by foreign clubs are bound to play in the Brazilian scratch team ___ an international competition is held.
a. wherever
b.whenever
c.whichever
What do Americans call a cashier?
A. Moneyman
B. Bearer
C. Teller
D. Peon
Grammar › View
Encik Bahrin looks very ____________ in his business suit.
A. rude
B. clever
C. amateur
D. professional
