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P. 308
Build Language: may have -ed
Read the sentences and fill in the blanks by using “may have -ed.”
1. He may have received the package from the post
office already. (receive)
2. David may have signed up for a class at the
academy last week. (sign up)
Unit 8 | Thinking Like a Scientist: Why Don’t Some Popcorn Kernels Pop?
