2012届中考英语完形填空专题训练及解析( )1. Yao Ming, _ NBA star, will continue _matches this season. A. an; the B. an; a C. a; the D. the; a( )2. It is not polite to enter others rooms _ knocking on the door. A. by B. with C. without D. at( )3. We cant work out the physics problem. Can you tell us_? A. how to do B. what to do it C. how to do it D. what should to do(
