21． The party last night was _______ big success and all the people present had ______ great fun．
A． a; a B． /; a C． a; / D． /; /
22． Bob, as well as the other children who ． fond of adventure, going hiking this weekend
A．is; is B．are; is C．is; are D．are; are
23． — How much did the old man_______ you for repairing your bike?
— Five Yuan． The price is very low．
A．charge B．spend C．cost D．pay
