★ Modals with Perfect Infinitive
A: I phoned you at nine this morning but got no answer. B: I’m sorry. I ___ been in the garden.
A. should have
B. must have
C. can have
D. could
Preview next quiz:
I don’t know where they went but they ___ have gone to Paris or Marseille.
A. must
B. should
C. might
D. need to
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