When I came in, I found Lucyby the windowto music.

A lot of trees and flowers are on ______ of the river and the number of them is growing ______.

I called Nina several times, but she didn’t answer. — Of course, she ____________ London for a visit.

Let’s plan a surprise party for our class. What’s your idea?—Why not ________ a short play?

Tom’s mother kept telling him that he should work harder，but ________ didn’t help.