摘要：19. It is widely ______that smoking can cause cancer. A. believed B. think C. say D. hoped20. ____caused the accident is still a complete mystery. A. What B. That C. How D. WhereKeys:1—5 ABABC 6—10 AABAC 11—15 BBCAB 16—20 BCBAA上一页 [1] [2] [3]
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19. It is widely ______that smoking can cause cancer.
A. believed B. think C. say D. hoped
20. ____caused the accident is still a complete mystery.
A. What B. That C. How D. Where