---Are your workers(工人)?---No, .A. friend; they aren’tB. sister; they are C. grandparents; they aren’t
Paul took exercise after school. He needed a good rest.
I by what you have told me.
—Do you know sound travels very fast ? —Yes. But light travels sound.
Sandydoesn’t know how to make a home page. Let’s give her some .
—Would you please this picturethe wall? —Sure, my pleasure.