Three _________ the students visited the museum yesterday.
Last night, I _______ along the street when I met my English teacher.
—I didn’t hear you come in at noon.—That’s good. We tried _______ any noise. We wanted you to have a good sleep.
We should do everything we can _______ the birds _______ danger.
At first, Luke felt a sense of cold _______ his body. A cross B. across C. through D. by
I spent _______ awful holiday this summer because _______ big flood on July 30th made lots of people lose lives.