[ Modal Verbs ]
Mark __________ride a bike when he was three years old.
A. could
B. might
C. can

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Kinds of Nouns › ViewLanguage
A. Common
B. Proper
C. Mass
D. Count
E. Collective
Grammar and Vocabulary › View
It was a fantastic vacation. We spent a lot of time walking through the beautiful, green ________.
A. coasts
B. glaciers
C. forests
