[ Present Continuous ]
Carlos______________(build) a Lego castle.
A. is building
B. built
C. are building
D. are built

Random Topics:
Adverbial Clause, Noun ClausePassive to ActiveSynonymGrammar (want to/ need to/ have to)Conjunctions and CommasPast ContinuousParts of Speech and Compound SentencesFuture TensesGrammar Comma UsagePhrasal verbs and Prepositional PhrasesOther quiz:
Past Tense › ViewWhy did they leave?
A. They are going.
B. They didn’t left.
C. They left for work.
Modals › View
Which sentence is correct? My purse isn’t in my pocket.
A. must in my bag.
B. must be in my bag.
C. mustn’t be in my bag.