21. (2012·冀州高一检测)In the face of_______ failure, it is the most important to keep up_______ good state of mind.
A. /；a B. a；/ C. the；/ D. /；the
22. (2012·济宁高一检测)Neither John nor I_______ able to persuade Richard’s grandfather to attend the wedding.
A. am B. are C. is D. are to be
23. (2012·遵义高一检测)—Would you mind my opening the window? It is too hot.
—_______.
A. No, please don’t B. Yes, go ahead
C. Yes, please D. No, go ahead
