Topics: Tenses
We __________ for nearly an hour when we realised that we were totally lost.
A. walked
B. had been walking
C. had walked
D. were walking
Select your answer:

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Grammar › ViewRussia can be one of the most beautiful and exciting travel ______.
A. holidays
B. accommodation
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Modals › View
As part of the project guidelines, team members _______submit their progress reports by Friday, but they ________request an extension under certain circumstances.
A. have to / may
B. had better/ must
C. may / must
D. can / have to
