By the end of the class, Ms. Boles will have ...

★ Identify The Tenses

By the end of the class, Ms. Boles will have been speaking for forty minutes.

A. Future Simple

B. Future Continuous

C. Future Perfect

D. Future Perfect Continuous

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Glen and Matthew have eaten their lunch already.

A. Present Simple

B. Present Continuous

C. Present Perfect

D. Present Perfect Continuous