[ 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:
Verbs & Adverbs › ViewFill in the blanks with the correct auxiliary verb:
They _____ waiting for you here last night.
A. have
B. had
C. were
D. are
Travel Vocabulary › View
Some __________ were confused about where to board the plane.
A. boarding cards
B. passengers
C. monuments
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
