[ Passive Voice ]
Mr. Green ___ at the University since 1989.
A. Has been teaching
B. Has been taught

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Modal Verbs - ObligationMust / must notCountable & Uncountable NounsWill or Going toConditional Type 1Grammar PhrasesIdiom and TensesConjunctionTenses - Irregular VerbsQuantifiersOther quiz:
Second Conditional › ViewIf you (be able to) ______________ sing well, what kind of song ______________________ (you/perform)?
A. were able to/ would you perform
B. would be able to/ did you perform
Grammar › View
mail + man=
A. man
B. mail
C. mailbox
D. mailman