Topics: Present Perfect Tense
Lisa . . . . my letter. Perhaps she is very busy.
A. didn’t answer
B. don’t answer
C. isn’t answering
D. hasn’t answered
Select your answer:

Random Topics:
Gerunds + To InfinitiveVerb Tenses and UsageSimple Past Tense and Past Perfect TensePrepositions of Time and PlaceCorrelative ConjunctionFuture Tenses and ModalsPresent Perfect SimplePresent Perfect - Just, Already, YetThird Grade ExamNouns as AdjectivesOther quiz:
Gerund or Infinitive › ViewI really like … in the rain, do you?
A. walk
B. walking
C. walks
Correlative Conjunction › View
Do you know the distance from Earth … Mars?
- and
- to
