—I tried to make Alice _____ her mind but I found it difficult.
—Well, I saw you _____ that when I went past.
A. changed; do B. changes; doing C. change; doing
_____ information he offered us! We all thank him.
A. What useful B. What useless C. How useful
—Shall we go now?
—No, let's wait ____ the rain stops.
A. until B. when C. if
—Food safety has become a social focus now.
—That's why laws are made _____ crimes on food.
A. to record B. to prevent C. prevent
—A number of Hollywood films _____ shown in China every year.
—Yes. The number of Hollywood films shown this year _____ reached 30.
A. are; has B. is; have C. are; have
I have _____ European pen friend, and he likes playing _____ guitar.
A. an; / B. an; the C. a; the
