问题 选择题 填空并选择。( ) 1. tw__ __ty ( ) 2. th__ __ty ( ) 3. f__f__een ( ) 4. seven__ __ ( ) 5. h__nd__ __d ( ) 6. tw__lv__ a. 12 b. 20 c. 70 d. 100e. 15 f. 30 答案 1. twenty-b 2. thirty-f 3. fifteen-e 4. seventy-c 5. hundred-d 6. twelve-a