'e*_0R8g)T'n(l-o5dTeachers often tell us ________ pens in class. We should be ________ to listen to them.5L8N,G/h7~.Y5Z
A. not to play; careful enough5L8N,G/h7~.Y5Z
B. not to play; enough careful5L8N,G/h7~.Y5Z
C. not to play with; careful enough5L8N,G/h7~.Y5Z
D. not to play with; enough careful5L8N,G/h7~.Y5Z