21I ___ my keys; I cannot find them anywhere.
22She ___ this book twice already.
23We ___ him since 2015.
24They ___ just finished their project.
25He ___ never visited Lahore before.
26The plane ___ already left when we reached the airport.
27She ___ her work by the time I arrived.
28By 2020, he ___ his degree.
29I ___ already eaten before they invited me.
30We ___ never seen such heavy rain before that day.
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