| Qian Xuesen is a great Chinese scientist ______ great contributions (贡献) to building our motherland. |
A. which has made B. which have made C. who has made D. who have made |
| A lot of books about education ______ in the last few years. |
A. have come out B. are coming out C. came out D. have been come out |
| By ______ part in "Chinese Bridge" programs, students in Chongqing got a great chance ______ friends with students from all over the world. |
A. take; to make B. taking; make C. to take; to make D. taking; to make |
| — _______, you can work out the math problem very easily. — I see. Thank you very much, Miss Wang. |
A. By the way B. On the way C. In this way D. to the way |