( ) 2. 40
( ) 3. 31
( ) 4. 50
( ) 5. 45
( ) 6. 56
B. twenty-one
C. forty
D. thirty-one
E. fifty
F. forty-five
1-6 B C D E F A
想一想.选一选. ( ) 1. 21( ) 2. 40( ) 3. 31( ) 4. 50( )相关攻略