______ that company to see how they think of our product yesterday

24. —______ that company to see how they think of our product yesterday?(A)

—Yes. They are happy with it.

A. Did you call B. Have you called C. Will you call D. Were you calling

25. ______ birds use their feathers for flight, some of their feathers are for other purposes.(C)

A. Once B. If C. Although D. Because

26. Jane moved aimlessly down the tree-lined street, not knowing ______she was heading.(B)

A. why B. where C. how D. when

27. Many airlines now allow passengers to print their boarding passes online ______ their valuable time. (C)

A. save B. saving

C. to save D. saved

28. If you don’t understand something, you may research, study, and talk to other people _______ you figure it out.(C)

A. because B. though C. until D. since

以上为北京高考英语试卷的部分试题及答案，仅供参考。