21.Half of the material _________ away.

21.Half of the material _________ away.
A.has taken B.has been taken C.have taken D.have been taken
22.Their room is ____ that one.
A.three times larger than B.larger three times than
C.three times larger as D.as three times large as
23.Visits to Disneyland _____ a delight to any child and usually a pleasure for his parents as well.
A.is B.are C.had been D.shall be
24.Henry often helps look after Granny Wang,but_______.
A.seldom is George B.seldom George does
C.seldom does George D.seldom looks George after Granny Wang
26.The pearl is the only gem(宝石) ________ by a living creature.
A.creating B.to create C.is created D.created
27.The number of people invited _____ forty,but a number of them ___ absent for different reasons.
A.was,were B.were,was C.was,was D.were,were