—May I use your cup, Tom?—Sorry,it ________by my sister just now.A.was brokenB.is brokenC.broke
—When did you become a volunteer?—I________in this group since 2008.
Basketball is so popular a game that________people play it for fun and exercise.
—I have bought a nice dress.—Where________you________it?
He wants to________you on the question of how to learn English well tomorrow.
Have you ever been to Shanghai________?