单选题 The dentist has decided to extract her bad tooth.
【正确答案】 A
【答案解析】[解析] 题干大意:牙医已经决定给她把坏牙拔掉。extract a tooth:拔牙。选项中,take out:取出,去掉,符合题意。repair:修理。push in:推进,闯入。dig:挖。