[ Modal Verbs ]
The snake disappeared from the zoo some time on Thursday. ‘It ____ slipped out of the cage while the door was open.’
A. had to
B. should have
C. needn’t have to
D. must have

Random Topics:
Present Perfect: for/sinceSubject Verb Agreement; Indefinite PronounsVerb + PrepositionNouns and QuantifiersSynonymsSentence Types and ConjunctionsVerb to haveTenses & PrepositionReporting VerbsConditional Sentence Type 3Other quiz:
Infinitive and Gerund › ViewHe prefers _____ to school on his own rather than _____ a bus.
A. drive, take
B. to drive, take
C. driving, to take
D. to drive, to take
Present Simple and Past Continuous › View
The twins usually ……………….. asleep as soon as Mum puts them to bed.
A. are falling
B. fell
C. fall
D. falls
Conditionals › ViewA third conditional sentence is used to express something…
A. probable
B. improbable
C. impossible
Grammar ( going to) › View
They are ……………. do sports.
A. go to
B. going to
C. going
