28、—Would you please help me fix my computer?

—             .

A．With pleasure        B．That’s all right          C．That’s right        D．My pleasure

27、John is      than wise. Sometimes he just can’t do things very well.

A．more brave           B．braver           C．very brave          D．no braver

26、—Why are the housing prices in big cities going up all the time?

—One reason is that people are     into overcrowded cities in great numbers.

A．breaking          B．filling           C．pouring           D．hurrying

24、A survey of the opinions of experts _____that three hours of outdoor exercise a week ______ good for one’s health．

A．show；are          B．shows；is         C．show；is          D．shows；are

23、It was in 2005_____ he finished his study abroad and returned to his motherland．

A．when        B．since         C．that           D．before

22、--How’s your tour around the North Lake? Is it beautiful?

--It ________ be, but it is now heavily polluted．

A．will           B．would               C．should         D．must

21、To test which foods are better for a long space journey, the astronauts in Shenzhou VI had as many as 50 dishes________．

A．to choose          B．to be chosen          C．to choose from      D．to be chosen from