单选题 Mary _______ her apartment for about six million yuan yesterday.(　　)

单选题 The city________ heavily on industry.(　　)

单选题 Her taste in clothing is similar _______ her aunt’s.(　　)

单选题 Protecting the environment is everyone’s_______.(　　)

单选题 ________I do not understand is the meaning of this book.(　　)

单选题 How much do you_______ for a tour to the countryside?(　　)

单选题 Judges should not________ their final choices.(　　)

单选题 He always looks me in the eye _______ he is telling the truth.(　　)