[ Perfect Tenses of Verbs ]
By that time, the dance troupe had mastered the routine for their recital.
A. present perfect
B. past perfect
C. future perfect

Random Topics:
Academic VocabularyBe Going To vs. WillGrammar of Conjunctions and PrepotitionsSentence Structure and Verb TensesSo, Such, Many, MuchAuxiliaries VerbTenses - Present and PastPhrases and TensesMust / must notImperative SentencesOther quiz:
Simple Past Tense › ViewJimena ___________ (go) to Poland last year.
A. went
B. gone
C. goed
D. go
Question Words › View
I __________ my teeth every day.
A. brushes
B. brush
Past Tenses › ViewShe was crying when I …………… her
A. was seeing
B. were seeing
C. see
D. saw
Conjunctions › View
______ in 1636, Harvard is one of the most famous universities in the United States.
A. Founding
B. Founded
C. It was founded
D. Being founded
