Which best identifies the use of a participle?

we've known them for 10 years!

harold, known to you as dr. mortimer, is coming to dinner on tuesday.

through the years, she's been known by many names.

all of the children have known him since christmas.

Based on its elements, this text teaches readers how to

Examine the public service ad. how does this ad transmit a cultural value? by sharing relevant high school graduation statistics by promoting a new type of educational program by reminding the public of the need for new schools by encouraging people to strive for more education

If you want to change from landscape orientation to portrait orientation, what would you do? turn the camera around. flip the camera over. turn the camera 90 degrees. turn the camera 360 degrees.