[ Tenses ]
How long …… at that university? I swear you started three years ago, but you still haven’t graded
A. are you studying
B. did you study
C. were you studying
D. have you been studying

Random Topics:
If Conditional Zero and OneGerund, Infinitive & ModalsAuxiliary VerbsAdverbs, Prefixes, and SuffixesZero Conditional SentenceRun-On SentencesVerbs of movementGrammar TOEFLPassive Voice - Past SimpleTransitionsOther quiz:
Articles › View_____ research they did into the effects of laughter was very interesting.
A. The
B. A
C. –
Grammar › View
The girl ____ I borrowed this book has left.
A. who
B. whom
C. whose
D. which
E. when
Prepositions › ViewKathleen apologized ________________ her brother’s poor behaviour.
A. For
B. In
C. Off
D. At
Modal Verbs › View
The oral interview in French____________ difficult. Few students passed it.
A. must have been
B. can’t be
C. can’t have been
D. must be