[ Can/Could ]
Most dinosaurs walked on land, but some ___________ fly or even swim.
A. could
B. couldn’t
C. can’t
D. can

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Past Perfect Simple & Past Perfect Continuous › ViewHad they climbed? is an example of Past Perfect Continuous
A. TRUE
B. FALSE
Tenses › View
Carol ________________ reading that book yet.
A. has finished
B. didn’t finish
C. haven’t finish
D. hasn’t finished