The keys are____ the drawer(抽屉).A. in B. on C. under
Mary with her sisters ________ Chinese in China.
Students should do everything they can ________ their study.
—I don’t know if Dr. White _______ to the party next week? —I think he will come if he ________ free.
Shanghai is _______ one of the two cities.
Sixteen-year-olds shouldn’t be allowed to get their ears__________.