[ Progressive Perfect and Simple Verb Tenses ]
The ________ tense is formed by the base form of the verb or the base form + s.
A. present
B. past
C. future
D. present progressive

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A. doesn`t usually wear
B. isn`t usually wearing
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I …… ten years old.
A. am
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Past Tense › View
The teacher ________ a photo of us while we ________ up the tree
A. took, had climbed
B. took, climbed
C. took, were climbing
D. had taken, were climbing