Topics: Verb Tenses
The launch of the first liquid-fuelled rocket in 1926 ______ by flight historians______as significant as the Wright Brothers’ flight.
A. has considered – to be
B. was considered – to be
C. is considered – to be
D. has been considered – has been
Select your answer:

Random Topics:
Future Tense (will/be going to/p.continuous)Gerund or InfinitiveBe Going To vs. WillAcademic VocabularyPrepositions & Modal VerbsGrammar: Reported QuestionsGrammar: MorphologyComplex Sentences with Adverb ClausesAdjective & AdverbEssential and Nonessential ClausesOther quiz:
Grammar › View“What _____________ ?”
“I don’t know. Look it up.”
_
A. means this word
B. is meaning this word
C. is meaning this word
D. does this word mean
Future Tenses › View
By the time you finish this exercise, you _____ all future tenses .
A. will have mastered
B. will have been mastering
C. will master
D. will be mastering
