摘要: Scientists say it may be one year or so it is possible to test the new medicine on human patients. A. when B. after C. before D. Since
网址:http://m.1010jiajiao.com/timu3_id_3228731[举报]
Scientists say it may be one year or so ________ it is possible to test the new medicine on human patients.
A.when
B.after
C.before
D.since
查看习题详情和答案>>Scientists say it may be one year or so ________ it is possible to test the new medicine on human patients.
A. when B. after C. before D. since
查看习题详情和答案>>