I thought it hard to complete the project at first，but I __________ my mind．
A．changeB．have changed
C．had changedD．would change
I have no doubt that he will make it，but I wonder __________ he is really ready enough．
A．whatB．why
C．whetherD．that
The money will be used __________ the school with new computer equipment．
A．to provideB．providing
C．providedD．to be provided
Paula waited until all the luggage was cleared，__________ hers never appeared．
A．orB．soC．asD．but
The girl is sure to become a good actress __________ she gets the right training．
A．untilB．if
C．althoughD．unless
The Oxford English Dictionary is necessary for learning English，so you'd better buy __________．
A．thisB．thatC．itD．one
