[ Present Perfect & Past Simple Tense ]
His collection of stamps is really impressive. I wonder how many he …… so far.
A. has collected
B. collected
C. hasn’t collected
D. didn’t collect
Select your answer:

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Past Simple and Past ContinuousOn, At, ByThe Future Simple TenseTenses PracticeTenses and OpinionsPresent Perfect, Present Simple, Present ContinuousPerfect TensesSuperlative & Comparative AdverbsFrequencyVocabulary & GrammarOther quiz:
Expressing Obligation and Modals › ViewWhich one of these sentences is expressing obligation?
A. Andy has to help his father feed the chickens after school
B. Andy should help his father feed the chickens after school
C. Andy wants to help his father feed the chickens after school
D. Andy will help his father feed the chickens after school
Prepositions › View
We ship all our goods …. train.
A. with
B. by
C. on
D. for
