精选优质文档-倾情为你奉上( )1. The problem _ at present has something important to do with our living conditions. A. discuss B. to be discussing C. being discussed D. to discuss( )2. What has made her so sad? _ in the physics examination. A. Failed B. Since she failed C. Failing D. Because of failing( )3. _, a man who expresses himself effectively is sure to succeed more rapidly than a man whose command of language is poor. A. Other things being equal B. Other thi
