[ Present Continuous, Present Perfect and Used to ]
The children _________________ a mess in the kitchen.
A. The children have made a mess in the kitchen.
B. The children has made a mess in the kitchen.
C. The children have make a mess in the kitchen.

Random Topics:
A/AnClause Markers TOEFL GrammarModals and TensesHas Got & Have GotGrammar and IdiomsGerund and InfinitivesBe used to vs used toFuture - Will and Be going toUnless If First ConditionalCountable Vs Uncountable NounsOther quiz:
Present Continuous Tense › ViewI _______ sending a text message.
A. is
B. are
C. am
Grammar › View
The opposite of dangerous.
A. Quiet
B. Crowded
C. Safe
Conditional Sentence - Type 1 › ViewIf he … the book. I will borrow it in my school library
A. hasn’t
B. doesn’t have
C. have
D. haven’t
Progressive Perfect and Simple Verb Tenses › View
He had worked as a cashier in this bank.
A. past perfect
B. past progressive
C. past
D. present perfect
