I ______ (be) a teacher _____ 30 years.
A. I have been a teacher for 30 years.
B. I have been a teacher since 30 years.
C. I has been a teacher for 30 years.
D. I has be a teacher since 30 years.

Random Topics:
Modals and TensesPrepositions Of PlacePronouns and AdverbsPreposition and Preposition PhraseEssential and Nonessential ClausesIndirect SpeechPresent Perfect ContinuousGrammar and PunctuationSimple, Compound, Complex SentencesContractions and ConjunctionsOther quiz:
Grammar › ViewWhich of these sentences has punctuated speech correctly?
A. “Do you want any sweets?” my dad asked. “I’m just about to go to the shop.”
B. “Do you want any sweets? my dad asked”. I’m just about to “go to the shop.”
C. Do you want any sweets? “my dad asked”. “I’m just about to go to the shop.”
D. “Do you want any sweets?” “my dad asked.” I’m just about to go to the shop.
Grammar › View
The eruption of Mount Pinatubo was the ____ in the 20th century.
A. destructiver
B. destructivest
C. most destructive
D. destructive
Grammar and Vocabulary › ViewThey moved into a …………………………….last week.
A. spacious modern new apartment
B. new spacious modern apartment
C. modern new spacious apartment
D. spacious new modern apartment
E. new modern spacious apartment
Adverb Clauses › View
They were not allowed to go on the trip __________ their parents had already signed their permission forms.
A. even though
B. after
C. because
D. as soon as