单选题 My brother and I ______ walking the family dog.

单选题 I find your lectures ______, but quite a few of my classmates think it is difficult.

单选题 Although she began as her brother's research assistant, she went on to pursue her own ______ studies.

单选题 Parents have a legal ______ to ensure that their child receives nine years of compulsory education.

单选题 It was no easy job for our soccer team to ______ their rivals.

单选题 ______ values are the fundamental beliefs of a person or an organization. They are the guiding principles that determine their behavior and action.

单选题 The industry has traditionally ______ as being that way, but it's not always the case.

单选题 Both presidents agreed that the talks had been ______.