21．I can’t help you ____ much for your help．
A．very B．that C．too D．so
22．Because her mother was ill, she had no _____ to go to the New Year Party．
A．taste B．emotion C．sense D．mood
23．All those second-hand goods are sold at ．before
A．30％as lower price as B．30％as low a price as
C．as 30％low price as D．30％lower price than
