[ Grammar ]
Choose the correct verb form to make a sentence in present perfect.
They ______________ this before.
A. do
B. has done
C. done
D. have done

Random Topics:
Verb & GrammarFirst ConditionalRegular and Irregular VerbsAuxiliary and Modal VerbsPassive Modals, Impersonal PassiveMust / must notConjunctions and PrepositionsModal Verbs and Gender NounsPast Tense and Perfect TensePresent Simple and ContinuousOther quiz:
Grammar › ViewWe helped some people _______ car had broken down.
A. who
B. whose
C. whom
D. where
Grammar & Vocabulary › View
. I __________ my CV and covering letter last week.
A. sent
B. have sent
C. sending
Grammar › ViewThe word “Tackled” in this sentence is a
A. adjective
B. adverb
C. verb
D. preposition
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I use my pen to_____.
A. write
B. drink
C. shower
D. walk
