Look at the girl in the red skirt. ______is my new classmate.
—What sign is often found in the library?—_______ .
She likes the music _____ she likes to sing along with.
—Who did English homework better, Leo or Nick?—Leo is more careful. I think Leo did _____ Nick.
People cut down too many trees, _____ the greenhouse effect becomes more and more serious.
—Who is the baby in this photo?—It’s my sister’s son. The photo _____ by her by e-mail ten days ago.