The news reporters hurried to the airport, only _____ the film stars had left.
A. to tell B. to be told C. telling D. told
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Was it in 1969 _____ the American astronaut succeed _____ landing on the moon？
A. when; on B. that; on C. which; in D that; in
从乙返回甲逆水匀速行驶需4小时，假设水流速度恒定，甲乙之间的距离为 公里，旅游船在静水中匀速行驶 公里需 小时，则满足 的方程为（）
A. content B. contrary C. concrete D. complete
A. recover B. relax C. relieve D. remove
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