[ Modal Verbs & Perfect Infinitive ]
. They look very happy in the photos. They ______ their vacation.
A. must have enjoyed
B. can’t have enjoyed
C. must be enjoying

Random Topics:
Tenses and Verb FormsGrammar ClausesComparative and Superlative AdjectiveGrammar and Sentence CorrectionComplex PrepositionsDemonstrative PronounsVerb + InfinitiveApostrophes and GrammarTravel VocabularyPast Perfect Tense and Past TenseOther quiz:
Grammar › ViewWhat tense expresses an action which was in progress quite recently and which affects the present situation, explains or gives reasons for the state of things at the present moment?
A. present simple
B. present perfect
C. present continuous
D. present perfect continuous
Homonyms › View
You are so ___ that you think that everyone is looking at you.
a. vane
b. vain
c. vein
She ………………………………………….. listening to you.
A. doesn’t
B. isn’t
C. don’t
D. not
Conditional Sentences › View
If I were you, I______ go with my friends
A. will
B. would
