[ Verb Tenses ]
_____ with Dr. Browne since your project in 2018?
A. Do you collaborate
B. Had you collaborated
C. Have you collaborated
D. Are you collaborating
Random Topics:
Verbs and PrepositionsConjunctive AdverbsComplex Sentences with Adverb ClausesConjunctions, Interjections and DeterminersGrammar, adverbs of frequency placementPresent Progressive (Future)Verb FormComparatives, Superlatives & EquativesBasic GrammarTOEIC Grammar and Vocabulary ReviewOther quiz:
Tenses › ViewShe _____ when the dorbell _____
A. was studing / ringed
B. was studying / rang
C. were studying / rung
D. were studying / rang
Vocabulary › View
If you ______________ information, you get it from a source, such as the Internet.
A. Cite
B. proposal
C. Risk
D. analysis
Present Perfect vs Past Simple › ViewI haven’t seen my parents _____ last Christmas.
A. already
B. before
C. for
D. since
Prepositions › View
The children walked __ the park to get home quickly.
A. For
B. Through
C. By