A. what B. these C. those D. ones
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Teachers’ salaries are raised today in order to _________
A. show the importance of teaching as a job B. attract more qualified people to become teachers C. make teachers “responsible” in their teaching D. improve the quality of public teaching
请选择（55）处最佳答案。
A. since
B. as
C. because
D. until
_________ I saw was two men crossing the street.
A. What B. Whom C. Who D. That
We were not surprised at ____, for he had worked so hard.
A. what has he achieved B. that what he had achieved C. what he had achieved D. that he had achieved
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