The speech by the mayor of Shanghai before the final voting for EXPO 2010 is strongly impressed ________ my memory. (2003上海春季高考题)

A.to                             B.over                                 C.by                                   D.on

Doris' success lies in the fact _______ she is co-operative and eager to learn from others.（2006年上海春季高考题）

A. which                   B. that                       C. when                            D. why

39.[2001春季全国] ________ late in the morning, Bob turned off the alarm.

These shoes look very good. I wonder _______. （2006年上海春季高考题）

A. how much cost they are                                 B. how much do they cost

C. how much they cost                                        D. how much are they cost